Diversity in Living World
Q. In which part of the plant does photosynthesis primarily occur?
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A.
Roots
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B.
Stems
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C.
Leaves
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D.
Flowers
Solution
Photosynthesis primarily occurs in the leaves, where chloroplasts are abundant.
Correct Answer: C — Leaves
Q. What is the main function of the xylem in vascular plants?
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A.
Transport of sugars
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B.
Transport of water and minerals
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C.
Photosynthesis
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D.
Storage of nutrients
Solution
Xylem is responsible for the transport of water and minerals from roots to other parts.
Correct Answer: B — Transport of water and minerals
Q. What is the main purpose of the plant cuticle?
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A.
Photosynthesis
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B.
Water retention
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C.
Nutrient absorption
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D.
Gas exchange
Solution
The cuticle helps in water retention by reducing water loss.
Correct Answer: B — Water retention
Q. What is the main role of mycorrhizal fungi in plant ecology?
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A.
Photosynthesis
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B.
Nutrient absorption
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C.
Seed dispersal
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D.
Pollination
Solution
Mycorrhizal fungi form symbiotic relationships with plant roots, enhancing nutrient absorption, particularly phosphorus.
Correct Answer: B — Nutrient absorption
Q. What is the primary function of the xylem in vascular plants?
-
A.
Transporting sugars
-
B.
Transporting water and minerals
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C.
Storing nutrients
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D.
Photosynthesis
Solution
The xylem is responsible for transporting water and dissolved minerals from the roots to the rest of the plant.
Correct Answer: B — Transporting water and minerals
Q. What is the primary method of seed dispersal for dandelions?
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A.
Water
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B.
Wind
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C.
Animals
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D.
Gravity
Solution
Dandelions use wind dispersal, with their lightweight seeds attached to parachute-like structures.
Correct Answer: B — Wind
Q. What is the primary purpose of plant stomata?
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A.
Nutrient storage
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B.
Gas exchange
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C.
Water retention
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D.
Root anchorage
Solution
Stomata are small openings on the leaf surface that facilitate gas exchange, allowing carbon dioxide in and oxygen out.
Correct Answer: B — Gas exchange
Q. What is the primary purpose of the flower in angiosperms?
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A.
Photosynthesis
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B.
Water storage
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C.
Reproduction
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D.
Nutrient absorption
Solution
The primary purpose of the flower in angiosperms is reproduction, facilitating pollination and seed formation.
Correct Answer: C — Reproduction
Q. What is the primary purpose of the plant cuticle?
-
A.
Photosynthesis
-
B.
Water retention
-
C.
Nutrient storage
-
D.
Gas exchange
Solution
The cuticle is a waxy layer that helps prevent water loss from the plant surface, aiding in water retention.
Correct Answer: B — Water retention
Q. What is the primary role of mycorrhizal fungi in plant ecology?
-
A.
Photosynthesis
-
B.
Nutrient absorption
-
C.
Seed dispersal
-
D.
Pollination
Solution
Mycorrhizal fungi enhance nutrient absorption for plants.
Correct Answer: B — Nutrient absorption
Q. What is the role of mycorrhizae in plant ecology?
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A.
Water storage
-
B.
Nutrient absorption
-
C.
Photosynthesis
-
D.
Seed dispersal
Solution
Mycorrhizae enhance nutrient absorption for plants, particularly phosphorus.
Correct Answer: B — Nutrient absorption
Q. What is the term for the relationship between plants and pollinators?
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A.
Mutualism
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B.
Commensalism
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C.
Parasitism
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D.
Competition
Solution
The relationship between plants and pollinators is a mutualistic one, where both parties benefit from the interaction.
Correct Answer: A — Mutualism
Q. What is the term for the study of plant classification?
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A.
Botany
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B.
Phytology
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C.
Taxonomy
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D.
Morphology
Solution
Taxonomy is the science of classification of living organisms, including plants.
Correct Answer: C — Taxonomy
Q. What type of leaf arrangement is characterized by leaves that grow in pairs on opposite sides of the stem?
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A.
Alternate
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B.
Whorled
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C.
Opposite
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D.
Rosette
Solution
Opposite leaf arrangement features pairs of leaves growing directly across from each other on the stem.
Correct Answer: C — Opposite
Q. What type of plant is characterized by having needle-like leaves?
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A.
Deciduous trees
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B.
Conifers
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C.
Ferns
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D.
Cacti
Solution
Conifers, such as pines and spruces, are known for their needle-like leaves which help reduce water loss.
Correct Answer: B — Conifers
Q. What type of plant tissue is responsible for photosynthesis?
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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 cells, particularly in leaves, are primarily responsible for photosynthesis.
Correct Answer: C — Parenchyma
Q. What type of plant tissue is responsible for the transport of water and minerals?
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A.
Phloem
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B.
Xylem
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C.
Cortex
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D.
Parenchyma
Solution
Xylem is the plant tissue responsible for the transport of water and dissolved minerals from the roots to the rest of the plant.
Correct Answer: B — Xylem
Q. What type of plant tissue is responsible for the transport of water?
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A.
Phloem
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B.
Xylem
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C.
Cortex
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D.
Parenchyma
Solution
Xylem is the plant tissue responsible for the transport of water and minerals from roots to leaves.
Correct Answer: B — Xylem
Q. What type of symmetry is exhibited by most flowers?
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A.
Radial symmetry
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B.
Bilateral symmetry
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C.
Asymmetry
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D.
None of the above
Solution
Most flowers exhibit radial symmetry, allowing for multiple lines of symmetry.
Correct Answer: A — Radial symmetry
Q. Which group of plants is known for having a dominant sporophyte generation?
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A.
Mosses
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B.
Ferns
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C.
Liverworts
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D.
Green algae
Solution
Ferns exhibit a dominant sporophyte generation, which is the diploid phase that produces spores.
Correct Answer: B — Ferns
Q. Which of the following is a characteristic feature of gymnosperms?
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A.
Flowers
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B.
Fruits
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C.
Naked seeds
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D.
Broad leaves
Solution
Gymnosperms are known for having naked seeds, which are not enclosed in an ovary.
Correct Answer: C — Naked seeds
Q. Which of the following is a characteristic feature of monocots?
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A.
Two seed leaves
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B.
Parallel leaf venation
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C.
Woody stems
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D.
Taproot system
Solution
Monocots, such as grasses, are characterized by parallel leaf venation and typically have one seed leaf.
Correct Answer: B — Parallel leaf venation
Q. Which of the following is a characteristic of angiosperms?
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A.
Seedless
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B.
Naked seeds
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C.
Flowers and fruits
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D.
Vascular tissue
Solution
Angiosperms are characterized by the presence of flowers and fruits, which aid in reproduction and seed dispersal.
Correct Answer: C — Flowers and fruits
Q. Which of the following is a characteristic of gymnosperms?
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A.
Flowers
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B.
Fruits
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C.
Naked seeds
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D.
Broad leaves
Solution
Gymnosperms are known for having naked seeds, unlike angiosperms which have seeds enclosed in fruits.
Correct Answer: C — Naked seeds
Q. Which of the following is a characteristic of monocots?
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A.
Two seed leaves
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B.
Parallel leaf venation
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C.
Woody stems
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D.
Taproot system
Solution
Monocots are characterized by having parallel leaf venation and one seed leaf (cotyledon).
Correct Answer: B — Parallel leaf venation
Q. Which of the following is a characteristic of monocotyledons?
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A.
Two seed leaves
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B.
Parallel leaf venation
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C.
Woody stems
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D.
Taproot system
Solution
Monocotyledons, or monocots, typically have parallel leaf venation and one seed leaf.
Correct Answer: B — Parallel leaf venation
Q. Which of the following is a feature of gymnosperms?
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A.
Enclosed seeds
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B.
Deciduous leaves
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C.
Cones for reproduction
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D.
Broad leaves
Solution
Gymnosperms reproduce using cones, which contain their seeds.
Correct Answer: C — Cones for reproduction
Q. Which of the following is a key feature of angiosperms?
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A.
Vascular tissue
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B.
Seeds
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C.
Flowers
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D.
All of the above
Solution
Angiosperms are characterized by the presence of flowers, seeds, and vascular tissue.
Correct Answer: D — All of the above
Q. Which of the following is a key feature of gymnosperms?
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A.
Enclosed seeds
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B.
Presence of flowers
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C.
Naked seeds
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D.
Non-vascular
Solution
Gymnosperms are characterized by having naked seeds, not enclosed in fruits.
Correct Answer: C — Naked seeds
Q. Which of the following is NOT a characteristic of angiosperms?
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A.
Seeds enclosed in fruits
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B.
Presence of flowers
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C.
Vascular tissue
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D.
Naked seeds
Solution
Angiosperms have seeds enclosed in fruits, while naked seeds are characteristic of gymnosperms.
Correct Answer: D — Naked seeds
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