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Questions and Answers
What happens after a pollen grain lands on the stigma of a suitable flower?
What happens after a pollen grain lands on the stigma of a suitable flower?
- The stigma withers and falls off the flower.
- The male gamete is released into the air.
- A pollen tube grows from the stigma to the ovary. (correct)
- The flower immediately produces seeds.
What is the role of the pollen tube in the process of fertilisation?
What is the role of the pollen tube in the process of fertilisation?
- Generates heat to aid in the growth of the ovary.
- Helps in photosynthesis to provide energy for seed formation.
- Carries a male gamete to meet a female gamete in an ovule. (correct)
- Protects the seeds from external damage.
What is the outcome of fertilisation in terms of chromosomes?
What is the outcome of fertilisation in terms of chromosomes?
- Each gamete retains its own set of chromosomes.
- The two gametes join and their chromosomes combine. (correct)
- The male gamete destroys the female gamete's chromosomes.
- The chromosomes of the two gametes remain separate.
What does the fertilised ovule develop into?
What does the fertilised ovule develop into?
How does the ovary of a flower contribute to seed development?
How does the ovary of a flower contribute to seed development?
The pollen grain on the stigma grows a tiny ______, all the way down the style to the ovary.
The pollen grain on the stigma grows a tiny ______, all the way down the style to the ovary.
In a process called fertilisation, the male gamete meets the female gamete in an ______.
In a process called fertilisation, the male gamete meets the female gamete in an ______.
The fertilised ovule goes on to form a ______, which contains a food store and an embryo.
The fertilised ovule goes on to form a ______, which contains a food store and an embryo.
The ovary of a flower develops into a ______ to protect the seed.
The ovary of a flower develops into a ______ to protect the seed.
Some flowers, such as avocados, only have one ______ in their ovary.
Some flowers, such as avocados, only have one ______ in their ovary.
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