Page 107 - Ripples SCIENCE 7 - TEJPUR Edition 2024 Answer Key

2. After fertilisation of the egg, the ovary becomes .................. and the ovules become

.................. .

Ans. fruit, seed
3. Roots, stems and leaves are called .................. of a plant.

Ans. vegetative parts

4. The scars present on the potato tubers are called .................. .
Ans.

5. The .................. is the male reproductive part of the flower while .................. is the
female reproductive part of the flower.

Ans. stamen, pistil

6. Urena seeds are dispersed by .......................... .
Ans. animals

7. ............................. is similar to cutting except that the cut part of plant is attached to
another rooted plant of a similar variety.

Ans. Grafting

C. State whether the following statements are true (T) or false (F).
1. China rose or Hibiscus is a bisexual flower.

2. Fruits are developed from a ripened ovary.

3. In asexual reproduction, a new plant is grown from any part of a plant with the help
of seeds.

4. Bisexual flowers contain both the stamens and the pistil.

5. Pollen is the male reproductive unit of the flower.
6. Vegetative propagation is usually seen in plants that do not produce seeds or do not

germinate.
7. In Spirogyra, small plantlets arise at the notch present on the leaf margin.

Ans. 1. (T) 2. (T) 3. (F) 4. (T) 5. (T) 6. (T) 7. (F)
D. Match the following.

Column A Column B

1. Bisexual flowers (a) Bryophyllum
2. Unisexual flowers (b) Urena

3. Plants that reproduce by leaves (c) Maple

4. Seeds dispersed by winds (d) Papaya
5. Seeds dispersed by animals (e) Mustard

Ans. 1. (e) 2. (d) 3. (a) 4. (c) 5. (b)

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