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Class 10 How do Organisms Reproduce? worksheet
CBSE Science. Asexual methods, flowers, human reproduction, chromosome numbers, fission growth. Every sheet has 20 questions in three sections and an answer key, and the numbers change every time.
Sample questions
Real questions from this chapter, as the app sets them. Tap Answer to see the answer and working.
Section A · multiple choice
- 1.
Leishmania usually reproduces asexually by:
- binary fission
- multiple fission
- spore formation
- fragmentation
Answer
(a) binary fission
- 2.
After fertilisation, the ovule wall develops into:
- the flower
- the fruit
- the pollen grain
- the seed coat
Answer
(d) the seed coat
- 3.
DNA copying during reproduction leads to:
- loss of all genes
- more chromosomes in each generation
- no change at all
- variation, because copying is never perfectly accurate
Answer
(d) variation, because copying is never perfectly accurate
Section B · short answer
- 4.
How does Planaria reproduce? Name the method and describe it in one line.
Answer
Regeneration: each cut piece grows into a complete organism.
- 5.
What does the ovule wall develop into after fertilisation?
Answer
The seed coat
Section C · long answer
- 6.
Explain the process of sexual reproduction in flowering plants, from pollination to the formation of seeds.
Answer
Pollen from the anther reaches the stigma (pollination). A pollen tube grows through the style to the ovule, and the male germ cell fuses with the female germ cell to form a zygote (fertilisation). The zygote divides to form an embryo; the ovule becomes a seed with a tough coat, and the ovary grows into a fruit. Petals, sepals, stamens, style and stigma may shrivel and fall off.
Fresh sheets for your child
In the app, every How do Organisms Reproduce? sheet is new: the app remembers the questions your child has already had and leaves them out. Print the sheet as a PDF, or use notebook mode and write the answers in a notebook.
Coming soon for Android and iPhone.