NCERT Class VII Science Solutions: Chapter 12-Reproduction in Plants Part 4

Download PDF of This Page (Size: 299K)

LONG ANSWER QUESTIONS

Question 17:

In the figure of a flower given in Figure label the parts whose functions are given below and give their names.

  1. The part which contains pollen grains.

  2. The part where the female gamete is formed.

  3. The female reproductive part where pollen grains germinate.

  4. The colorful part of flower which attracts insects.

Result for parts whose functions are given below and give their names.(Q)

Parts Whose Functions Are Given below and Give Their Names.(Q)

Result for parts whose functions are given below and give their names.(Q)

Answer:

Result for parts whose functions are given below and give their names.(A)

Parts Whose Functions Are Given below and Give Their Names.(A)

Result for parts whose functions are given below and give their names.(A)

Question 18:

Fill in the blanks with correct terms.

The male and female gametes fuse to form a _____(a)_____ during the process of _____(b)______. This grows into an ____(c)_____ which is enclosed within a seed. After fertilisation the ovules develop Into ____(d)_____ and the ovary develops into a _____(e)______ .

Answer:

The male and female gametes fuse to form a zygote during the process of fertilization. This grows into an embryo. Which is enclosed within a seed. After fertilisation the ovules develop into seed and the ovary develops into a fruit.

Question 19:

In the diagram of a bisexual flower given as Figure, draw the missing part and label the parts marked (a), (b) and (c). Also label the missing part that you draw.

Result for a bisexual flower given as Figure (Q)

A Bisexual Flower Given as Figure (Q)

Result for a bisexual flower given as Figure (Q)

Answer:

Result for a bisexual flower given as Figure (A)

A Bisexual Flower Given as Figure (A)

Result for a bisexual flower given as Figure (A)

Question 20:

Write how the following seeds are dispersed.

  1. Seeds with wings.

  2. Small and light seeds.

  3. Seeds with spines/hooks.

Answer:

  1. Dispersed by wind.

  2. Dispersed by wind.

  3. Dispersed by animal.