Biology (School & UG)
Q. Which plant tissue is primarily involved in photosynthesis?
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A.
Xylem
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B.
Phloem
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C.
Mesophyll
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D.
Sclerenchyma
Solution
Mesophyll tissue, located in the leaves, contains chloroplasts and is primarily responsible for photosynthesis.
Correct Answer: C — Mesophyll
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Q. Which plant tissue is primarily involved in the healing of wounds?
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A.
Parenchyma
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B.
Collenchyma
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C.
Sclerenchyma
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D.
Meristematic
Solution
Parenchyma tissue can divide and differentiate to help heal wounds in plants.
Correct Answer: A — Parenchyma
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Q. Which plant tissue is primarily involved in the storage of food?
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A.
Xylem
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B.
Phloem
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C.
Parenchyma
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D.
Sclerenchyma
Solution
Parenchyma tissue is often involved in the storage of food, particularly starch, in various plant organs.
Correct Answer: C — Parenchyma
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Q. Which plant tissue is primarily involved in the storage of starch?
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A.
Parenchyma
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B.
Collenchyma
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C.
Sclerenchyma
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D.
Xylem
Solution
Parenchyma cells often store starch and other carbohydrates, making them essential for energy storage.
Correct Answer: A — Parenchyma
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Q. Which plant tissue is primarily involved in the transport of nutrients and photosynthates?
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A.
Xylem
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B.
Phloem
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C.
Cortex
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D.
Sclerenchyma
Solution
Phloem is primarily involved in the transport of nutrients and photosynthates throughout the plant.
Correct Answer: B — Phloem
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Q. Which plant tissue is primarily involved in the transport of sugars?
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A.
Xylem
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B.
Phloem
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C.
Meristematic tissue
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D.
Sclerenchyma
Solution
Phloem is responsible for the transport of sugars and other metabolic products downward from the leaves.
Correct Answer: B — Phloem
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Q. Which plant tissue is primarily responsible for the transport of organic compounds?
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A.
Xylem
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B.
Phloem
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C.
Parenchyma
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D.
Sclerenchyma
Solution
Phloem is responsible for the transport of organic compounds, particularly sugars, throughout the plant.
Correct Answer: B — Phloem
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Q. Which plant tissue is responsible for the formation of new vascular tissues?
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A.
Cork cambium
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B.
Vascular cambium
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C.
Parenchyma
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D.
Phloem
Solution
The vascular cambium is responsible for the production of new xylem and phloem tissues in plants.
Correct Answer: B — Vascular cambium
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Q. Which plant-derived compound is commonly used to lower cholesterol levels?
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A.
Saponins
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B.
Alkaloids
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C.
Flavonoids
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D.
Phenolics
Solution
Saponins can help lower cholesterol levels by binding to bile acids.
Correct Answer: A — Saponins
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Q. Which plant-derived compound is known for its potential to lower cholesterol levels?
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A.
Beta-glucans
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B.
Saponins
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C.
Alkaloids
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D.
Terpenes
Solution
Beta-glucans, found in oats and barley, are known to help lower cholesterol levels.
Correct Answer: A — Beta-glucans
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Q. Which plant-derived compound is known for its potential to reduce cholesterol levels?
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A.
Beta-glucans
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B.
Tannins
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C.
Saponins
-
D.
Alkaloids
Solution
Beta-glucans, found in oats and barley, are known to help lower cholesterol levels.
Correct Answer: A — Beta-glucans
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Q. Which plant-derived substance is commonly used to lower cholesterol levels?
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A.
Psyllium
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B.
Ginger
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C.
Garlic
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D.
Turmeric
Solution
Garlic is known for its ability to lower cholesterol levels and improve heart health.
Correct Answer: C — Garlic
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Q. Which plant-derived substance is known for its ability to enhance immune function?
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A.
Echinacea
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B.
Lavender
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C.
Chamomile
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D.
Ginger
Solution
Echinacea is widely recognized for its immune-boosting properties.
Correct Answer: A — Echinacea
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Q. Which plant-derived substance is known for its potential to lower cholesterol levels?
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A.
Psyllium
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B.
Caffeine
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C.
Tannins
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D.
Saponins
Solution
Psyllium, a soluble fiber from the psyllium plant, can help lower cholesterol levels.
Correct Answer: A — Psyllium
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Q. Which plant-derived substance is known to have antimicrobial properties?
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A.
Eucalyptus oil
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B.
Coconut oil
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C.
Olive oil
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D.
Sunflower oil
Solution
Eucalyptus oil has been recognized for its antimicrobial properties.
Correct Answer: A — Eucalyptus oil
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Q. Which plant-derived substance is known to lower cholesterol levels in humans?
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A.
Psyllium
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B.
Saponins
-
C.
Tannins
-
D.
Resins
Solution
Psyllium, derived from the psyllium seed, is effective in lowering cholesterol.
Correct Answer: A — Psyllium
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Q. Which plant-derived substance is known to lower cholesterol levels?
-
A.
Beta-glucans
-
B.
Tannins
-
C.
Saponins
-
D.
Alkaloids
Solution
Beta-glucans, found in oats and barley, are known to help lower cholesterol levels.
Correct Answer: A — Beta-glucans
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Q. Which plant-derived substance is often used to treat anxiety and promote relaxation?
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A.
Valerian root
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B.
Echinacea
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C.
Ginger
-
D.
Peppermint
Solution
Valerian root is commonly used in herbal medicine for its calming effects and ability to reduce anxiety.
Correct Answer: A — Valerian root
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Q. Which plant-derived substance is used to lower cholesterol levels?
-
A.
Psyllium
-
B.
Caffeine
-
C.
Tannins
-
D.
Saponins
Solution
Psyllium, a soluble fiber from the psyllium plant, is effective in lowering cholesterol.
Correct Answer: A — Psyllium
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Q. Which process allows for genetic variation in plant populations, contributing to evolution?
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A.
Mitosis
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B.
Meiosis
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C.
Cloning
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D.
Asexual reproduction
Solution
Meiosis is the process that allows for genetic variation in plant populations, which is essential for evolution.
Correct Answer: B — Meiosis
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Q. Which process allows for the transfer of genetic material between different plant species?
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A.
Hybridization
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B.
Cloning
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C.
Asexual reproduction
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D.
Apomixis
Solution
Hybridization allows for the transfer of genetic material between different plant species, leading to new varieties.
Correct Answer: A — Hybridization
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Q. Which process allows plants to adapt to different environments over time?
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A.
Photosynthesis
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B.
Transpiration
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C.
Evolution
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D.
Respiration
Solution
Evolution allows plants to adapt to different environments over time through mechanisms like natural selection.
Correct Answer: C — Evolution
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Q. Which process allows plants to convert light energy into chemical energy?
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A.
Respiration
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B.
Photosynthesis
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C.
Transpiration
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D.
Fermentation
Solution
Photosynthesis is the process by which plants convert light energy into chemical energy stored in glucose.
Correct Answer: B — Photosynthesis
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Q. Which process allows plants to reproduce asexually through runners?
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A.
Budding
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B.
Fragmentation
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C.
Vegetative propagation
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D.
Pollination
Solution
Vegetative propagation is a form of asexual reproduction where new plants grow from runners or stolons.
Correct Answer: C — Vegetative propagation
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Q. Which process can lead to the rapid evolution of plant traits in response to environmental pressures?
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A.
Stabilizing selection
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B.
Directional selection
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C.
Disruptive selection
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D.
All of the above
Solution
All types of selection (stabilizing, directional, and disruptive) can lead to rapid evolution of plant traits in response to environmental pressures.
Correct Answer: D — All of the above
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Q. Which process converts light energy into chemical energy in plants?
-
A.
Respiration
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B.
Transpiration
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C.
Photosynthesis
-
D.
Fermentation
Solution
Photosynthesis converts light energy into chemical energy stored in glucose.
Correct Answer: C — Photosynthesis
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Q. Which process describes the copying of DNA to produce two identical DNA molecules?
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A.
Transcription
-
B.
Translation
-
C.
Replication
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D.
Recombination
Solution
Replication is the process by which DNA is copied to produce two identical DNA molecules.
Correct Answer: C — Replication
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Q. Which process describes the exchange of genetic material between homologous chromosomes during meiosis?
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A.
Transcription
-
B.
Crossing over
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C.
Replication
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D.
Translation
Solution
Crossing over is the process where homologous chromosomes exchange genetic material, increasing genetic diversity.
Correct Answer: B — Crossing over
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Q. Which process describes the growth of a plant in response to light?
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A.
Phototropism
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B.
Gravitropism
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C.
Thigmotropism
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D.
Hydrotropism
Solution
Phototropism is the growth of a plant in response to light direction.
Correct Answer: A — Phototropism
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Q. Which process describes the growth of a plant towards light?
-
A.
Phototropism
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B.
Gravitropism
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C.
Thigmotropism
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D.
Hydrotropism
Solution
Phototropism is the growth of a plant towards light, driven by differential growth rates.
Correct Answer: A — Phototropism
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