Two Marks Questions
(NCERT)
(NCERT)
1. Explain how pollination in flowers differs from fertilization.
2. What is difference between unisexual and bisexual flowers?
3. Give some examples of different modes of fertilization in nature?
4.
Draw a labelled diagram of longitudinal section of a flower.
5. What type of adaptations are generally observed in
(a) insect pollinated flowers,
(b) wind pollinated flowers?
6. What is double fertilization? Why is it called so?
What is the significance of pollination in the process of reproduction in plan
8. What are cotyledons and what is their use in the process of reproduction?
9. Draw labelled diagrams of reproductive parts of a flower.
10. What is difference between testa and pericarp?
7.
Three Marks Questions
Answers
Q 1 Pollination and Fertilization occur in plants during sexual reproduction.
...
Difference between Pollination and Fertilization.
Pollination Fertilization
Pollination occurs from anthers of stamens to stigma of the ovary It is the fusion of female and male gametes
It is a physical process. It is a genetic and biochemical process.
Q 2
Unisexual and bisexual flowers are two types of flowers found in plants. ... The main difference between unisexual and bisexual flowers is that unisexual flowers contain male and female reproductive organs in separate flowers whereas bisexual flowers contain both male and female reproductive organs in the same flower.
Q 3
The modes of fertilisation in nature are internal fertilisation and external fertilisation.