Sexual Reproduction in Flowering Plants_Unsolved Paper
Chapter: How Do Organisms Reproduce | Topic: Sexual Reproduction in Flowering Plants
SEXUAL REPRODUCTION IN FLOWERING PLANTS_UNSOLVED PAPER
Topic: Sexual Reproduction in Flowering Plants
Q1.Which part of a flower produces pollen grains?
- Stigma
- Anther
- Ovary
- Ovule
Q2.Which structure of a flower receives pollen grains during pollination?
- Anther
- Filament
- Stigma
- Ovule
Q3. The female reproductive part of a flower is called:
- Stamen
- Pistil
- Anther
- Filament
Q4. What is the transfer of pollen grains from anther to stigma called?
- Fertilisation
- Germination
- Pollination
- Fragmentation
Q5. After fertilisation in a flowering plant, which structure generally develops into the seed?
- Ovule
- Stigma
- Anther
- Filament
Q6. Which sequence correctly represents the major events of sexual reproduction in a flowering plant?
- Fertilisation --> Pollination --> Seed formation
- Pollination --> Fertilisation --> Seed formation
- Seed formation --> Pollination --> Fertilisation
- Germination --> Pollination --> Fertilisation
Short questions
Q1. What is sexual reproduction in flowering plants? Why does it involve two types of reproductive cells?
Q2. Name the two main reproductive parts of a flower. State the function of each.
Q3. Differentiate between anther and stigma on the basis of their location and role in reproduction.
Q4. What is pollination? Mention the two main types of pollination.
Q5. A honeybee visits a flower, collects nectar and then visits another flower of the same kind.
How could the movement of the bee contribute to reproduction in flowering plants?
Q6. Students observe that some flowers in the school garden are visited frequently by insects, while others receive very few insect visits.
Why might insect visits be important for sexual reproduction in flowering plants?
Q1. Describe the structure of a typical flower involved in sexual reproduction. Explain the roles of the stamen, anther, filament, pistil, stigma, style, ovary, and ovule.
Q2. Explain the process of sexual reproduction in a flowering plant from pollination to fertilisation. Include the role of the pollen grain, pollen tube, ovule, and male and female gametes.
Q3. Explain the changes that occur in a flower after fertilisation. Describe the fate of the ovule, ovary, and zygote and explain how these changes contribute to the formation of a new plant.
Q1. A farmer notices that flowering plants in his field produce very few seeds even though the plants are healthy and flowering normally.
a) Which stage of sexual reproduction could be affected if pollen does not reach the appropriate part of the flower?
b) Which flower structure must receive the pollen grains?
Q2. A student covers some flowers in a garden with fine protective bags before they open. Later, those flowers produce fewer seeds than uncovered flowers that were visited by insects.
a) Which reproductive event may have been reduced in the covered flowers?
b) Why could preventing insect visits affect seed formation?
Q3. A student records the following observations while studying a flowering plant:
Pollen grains reach the receptive surface of a flower.
A pollen tube develops.
Male and female gametes unite.
A structure inside the ovary begins developing into a seed.
Arrange these events in the correct biological sequence and name the reproductive process represented by the union of the gametes.