Chapter Exam

Chapter 5: Reproduction and Modification in Plants — Online MCQ Test

Q: Which part of a flower produces pollen grains?

Answer: B. Anther — The anther is the part of the stamen that produces pollen grains. Pollen contains the male reproductive cells.

Q: Pollination means the transfer of pollen grains from ____ to stigma.

Answer: C. anther — Pollination is the movement of pollen grains from the anther to the stigma of a flower.

Q: After pollination, which process occurs next to form seeds?

Answer: B. Fertilization — Fertilization takes place after pollination when the male and female gametes unite in the ovule.

Q: Which of the following is the best reason why cactus leaves are modified into spines?

Answer: C. To reduce water loss — Cactus leaves are modified into spines to reduce transpiration and conserve water in dry regions.

SCIENCE · Samacheer Kalvi 7th · Tamil Nadu State Board

Practice Chapter 5: Reproduction and Modification in Plants with a free chapter-wise online MCQ test for Tamil Nadu State Board Samacheer Kalvi 7th SCIENCE. This chapter covers: Pollination fertilization modification Plant reproduction methods fertilization pollination and structural adaptations. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 5: Reproduction and Modification in Plants — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board Samacheer Kalvi 7th SCIENCE — Chapter 5: Reproduction and Modification in Plants, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which part of a flower produces pollen grains?

A. Stigma
B. Anther ✓
C. Ovary
D. Sepal

Answer: B. Anther
The anther is the part of the stamen that produces pollen grains. Pollen contains the male reproductive cells.

Pollination means the transfer of pollen grains from ____ to stigma.

A. stigma
B. ovary
C. anther ✓
D. petal

Answer: C. anther
Pollination is the movement of pollen grains from the anther to the stigma of a flower.

After pollination, which process occurs next to form seeds?

A. Germination
B. Fertilization ✓
C. Spore formation
D. Budding

Answer: B. Fertilization
Fertilization takes place after pollination when the male and female gametes unite in the ovule.

Which of the following is the best reason why cactus leaves are modified into spines?

A. To attract insects
B. To store food
C. To reduce water loss ✓
D. To help in pollination

Answer: C. To reduce water loss
Cactus leaves are modified into spines to reduce transpiration and conserve water in dry regions.

Which of the following is the correct sequence of events in sexual reproduction in flowering plants?

A. Fertilization → Pollination → Seed formation → Germination
B. Pollination → Fertilization → Seed formation → Germination ✓
C. Seed formation → Pollination → Fertilization → Germination
D. Germination → Pollination → Fertilization → Seed formation

Answer: B. Pollination → Fertilization → Seed formation → Germination
Pollination occurs first, followed by fertilization. After fertilization, seeds form and later germinate under suitable conditions.

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