Reproduction in Plants - Numerical Applications for Exams

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Reproduction in Plants - Numerical Applications

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This section focuses on numerical, quantitative, and data-based problems related to plant reproductive processes. It is designed for Class 11–12 students, NEET aspirants, and undergraduate learners to strengthen their ability to apply reproductive biology concepts using calculations and data interpretation.

In this section, you will practice:

Numerical problems based on pollen output, ovule number, and seed set
Calculations related to fertilization success and reproductive efficiency
Data-based questions on pollination types and fruit formation
Quantitative analysis of embryo and endosperm development
Interpretation of tables, graphs, and experimental reproductive data
NCERT-aligned numerical questions and exam-oriented practice sets

The content is structured to improve step-by-step calculation skills, enhance data interpretation, and help students confidently handle numerical and graph-based questions in school examinations, NEET, and undergraduate assessments.

Develop accuracy and confidence in solving numerical applications related to reproduction in plants through systematic practice.

Q. How many chromosomes are present in the gametes of a plant with a total of 30 chromosomes in its somatic cells?

A. 15
B. 30
C. 60
D. 45

Solution

Gametes are haploid, so they will have half the number of chromosomes, which is 15.

Correct Answer: A — 15

Q. How many chromosomes are typically found in the gametes of a diploid plant with 14 chromosomes?

A. 7
B. 14
C. 21
D. 28

Solution

Gametes are haploid, so they contain half the number of chromosomes, which is 14/2 = 7.

Correct Answer: A — 7

Q. How many petals does a typical flower of the family Asteraceae have?

A. 5
B. 10
C. 20
D. 30

Solution

A typical flower in the Asteraceae family has 10 petals.

Correct Answer: B — 10

Q. How many seeds can a single sunflower head produce on average?

A. 50
B. 100
C. 200
D. 1000

Solution

A single sunflower head can produce around 200 seeds on average.

Correct Answer: C — 200

Q. How many seeds does a typical sunflower head produce?

A. 100
B. 500
C. 1000
D. 2000

Solution

A typical sunflower head can produce around 1000 seeds.

Correct Answer: C — 1000

Q. If a plant can produce 5 flowers per day and each flower produces 10 seeds, how many seeds will be produced in 7 days?

A. 350
B. 500
C. 700
D. 1000

Solution

In 7 days, the plant will produce 5 flowers/day * 7 days = 35 flowers, and 35 flowers * 10 seeds/flower = 350 seeds.

Correct Answer: C — 700

Q. If a plant has a generation time of 2 years and produces 100 seeds per generation, how many seeds will it produce in 10 years?

A. 200
B. 400
C. 500
D. 600

Solution

In 10 years, the plant will complete 5 generations (10/2), producing 5 * 100 = 500 seeds.

Correct Answer: C — 500

Q. If a plant has a generation time of 2 years, how many generations will it complete in 10 years?

A. 2
B. 5
C. 10
D. 20

Solution

In 10 years, the plant will complete 5 generations (10 years / 2 years per generation).

Correct Answer: B — 5

Q. If a plant has a total of 24 chromosomes in its diploid state, how many chromosomes will be present in its gametes?

A. 12
B. 24
C. 48
D. 6

Solution

Gametes are haploid, so they will have half the number of chromosomes, which is 12.

Correct Answer: A — 12

Q. If a plant produces 150 fruits and each fruit contains an average of 5 seeds, how many seeds are produced in total?

A. 300
B. 500
C. 750
D. 1000

Solution

The total number of seeds produced would be 150 fruits * 5 seeds per fruit = 750 seeds.

Correct Answer: C — 750

Q. If a plant species has a generation time of 2 years, how many generations can it produce in 10 years?

A. 2
B. 5
C. 10
D. 20

Solution

In 10 years, a plant with a generation time of 2 years can produce 5 generations.

Correct Answer: B — 5

Q. If a plant species has a pollination success rate of 80% and produces 50 flowers, how many flowers are expected to be successfully pollinated?

A. 30
B. 40
C. 50
D. 60

Solution

With an 80% success rate, 0.80 * 50 flowers = 40 flowers are expected to be successfully pollinated.

Correct Answer: B — 40

Q. If a plant species has a seed dispersal distance of 50 meters, how far would seeds typically spread in 5 generations assuming the distance doubles each generation?

A. 50m
B. 100m
C. 200m
D. 1600m

Solution

The distance would be 50m * 2^5 = 1600m after 5 generations.

Correct Answer: D — 1600m

Q. If a plant species has a seed germination rate of 75%, how many seeds will germinate from 200 seeds?

A. 50
B. 100
C. 150
D. 200

Solution

With a germination rate of 75%, from 200 seeds, 0.75 * 200 = 150 seeds will germinate.

Correct Answer: C — 150

Q. In a plant with a 3:1 ratio of dominant to recessive traits, how many offspring would you expect to show the dominant trait out of 100?

A. 25
B. 50
C. 75
D. 100

Solution

In a 3:1 ratio, 75 out of 100 offspring would be expected to show the dominant trait.

Correct Answer: C — 75

Q. In a population of plants, if 60% are hermaphroditic and the rest are dioecious, what is the number of dioecious plants in a population of 200?

A. 40
B. 60
C. 80
D. 100

Solution

If 60% are hermaphroditic, then 40% are dioecious, which equals 80 dioecious plants in a population of 200.

Correct Answer: A — 40

Q. In a population of plants, if 60% are hermaphroditic and the rest are dioecious, what percentage of the population is dioecious?

A. 20%
B. 30%
C. 40%
D. 50%

Solution

If 60% are hermaphroditic, then 100% - 60% = 40% are dioecious.

Correct Answer: B — 30%

Q. In a study, a plant species was found to have a seed dispersal distance averaging 30 meters. If 10 seeds are dispersed, what is the total distance covered by all seeds?

A. 30m
B. 300m
C. 600m
D. 900m

Solution

If each of the 10 seeds disperses an average of 30 meters, the total distance is 10 seeds * 30m = 300m.

Correct Answer: B — 300m

Q. In a typical angiosperm, how many petals does a flower usually have?

A. 3
B. 5
C. 7
D. 10

Solution

Many angiosperms typically have flowers with 5 petals, although this can vary.

Correct Answer: B — 5

Q. In a typical plant life cycle, how many generations are involved in alternation of generations?

A. 1
B. 2
C. 3
D. 4

Solution

The alternation of generations involves two generations: the haploid gametophyte and the diploid sporophyte.

Correct Answer: B — 2

Q. In flowering plants, how many pollen grains are typically produced by one anther?

A. 4
B. 8
C. 16
D. 32

Solution

One anther usually produces 4 pollen grains per microspore mother cell, leading to 8 pollen grains in total.

Correct Answer: B — 8

Q. What is the average number of fruits produced by a single tomato plant in a growing season?

A. 10
B. 50
C. 100
D. 200

Solution

A single tomato plant can produce around 100 fruits in a growing season under optimal conditions.

Correct Answer: C — 100

Q. What is the average number of ovules per ovary in a typical angiosperm?

A. 1
B. 5
C. 10
D. 20

Solution

On average, a typical angiosperm ovary contains about 10 ovules.

Correct Answer: C — 10

Q. What is the average number of ovules per ovary in most flowering plants?

A. 1
B. 2
C. 10
D. 100

Solution

Most flowering plants typically have 1 to several ovules per ovary, with an average often around 1 to 10.

Correct Answer: C — 10

Q. What is the average number of ovules produced by a single ovary in a typical flowering plant?

A. 1
B. 5
C. 10
D. 20

Solution

On average, a single ovary can produce around 5 to 10 ovules, but this can vary widely.

Correct Answer: B — 5

Q. What is the typical chromosome number in a diploid plant cell?

A. 1n
B. 2n
C. 3n
D. 4n

Solution

Diploid cells have two sets of chromosomes, denoted as 2n.

Correct Answer: B — 2n

Q. What is the typical number of chromosomes in a diploid plant cell?

A. 23
B. 46
C. 12
D. 24

Solution

Diploid cells have two sets of chromosomes, so the typical number is 46.

Correct Answer: B — 46

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