Class 10th science notes
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Plasmodium, the malarial parasite, divides into many daughter cells simultaneously within a cyst. This mode of asexual reproduction is called:
Anonymous Quiz
15%
Binary fission
11%
Budding
67%
Multiple fission
6%
Fragmentation
2
A student observes that a potato tuber kept in a basket has started to grow small green shoots from its 'eyes'. This is an example of:
Anonymous Quiz
13%
Spore formation
32%
Budding
8%
Sexual reproduction
47%
Vegetative propagation
2
1
In which of the following organisms does reproduction occur through binary fission where the plane of division is not fixed?
Anonymous Quiz
18%
Leishmania
10%
Paramecium
62%
Amoeba
9%
Plasmodium
1
Which hormone is primarily responsible for the development of secondary sexual characteristics in human males?
Anonymous Quiz
6%
Estrogen
10%
Progesterone
78%
Testosterone
5%
Adrenaline
3
Some organisms like Planaria can be cut into several pieces, and each piece grows into a complete organism. This ability is known as:
Anonymous Quiz
5%
Budding
22%
Fragmentation
69%
Regeneration
3%
Fission
1
After fertilization in a flower, which parts develop into the seed and the fruit respectively?
Anonymous Quiz
30%
Ovary and Ovule
48%
Ovule and Ovary
13%
Petal and Sepal
9%
Stamen and Pistil
1
Which of the following contraceptive methods also provides protection from sexually transmitted diseases (STDs)?
Anonymous Quiz
7%
Oral contraceptive pills
16%
Copper-T (IUD)
64%
Condoms
13%
Surgical methods (Vasectomy/Tubectomy)
4
The bread mould, Rhizopus, reproduces asexually by forming thick-walled structures that can survive unfavorable conditions. These structures are called:
Anonymous Quiz
8%
Buds
74%
Spores
15%
Zygotes
3%
Gametes
1
In the menstrual cycle, what happens to the lining of the uterus if fertilization of the egg does not occur?
Anonymous Quiz
6%
It remains thick and waits for the next egg.
6%
It is absorbed by the body.
83%
It breaks down and is discharged from the body along with blood.
5%
It develops into a placenta.
1👍1
A small outgrowth arises from the parent body and eventually detaches to become a new individual. This mode of asexual reproduction, common in Hydra, is known as:
Anonymous Quiz
9%
Fragmentation
12%
Regeneration
73%
Budding
5%
Spore formation
1
Which of the following pairs of diseases are caused by bacteria and can be sexually transmitted?
Anonymous Quiz
23%
AIDS and Warts
41%
Gonorrhoea and Syphilis
14%
Malaria and Gonorrhoea
22%
AIDS and Syphilis
4🎉1
The transfer of pollen grains from the anther to the stigma of the same flower or another flower on the same plant is called:
Anonymous Quiz
16%
Cross-pollination
71%
Self-pollination
9%
Fertilization
5%
Germination
1
In the human female reproductive system, where does the fusion of a sperm and an egg (fertilization) typically occur?
Anonymous Quiz
18%
Uterus
19%
Ovary
11%
Vagina
52%
Oviduct (Fallopian tube)
5
In a flower, which part contains the ovules that develop into seeds after fertilization?
Anonymous Quiz
12%
Stigma
10%
Style
9%
Anther
69%
Ovary
2
Spirogyra, an alga, reproduces asexually by breaking up into smaller pieces, each of which grows into a new individual. This process is called:
Anonymous Quiz
12%
Fission
28%
Regeneration
11%
Budding
49%
Fragmentation
2
The transfer of pollen from the anther of one flower to the stigma of another flower on a different plant of the same species is called:
Anonymous Quiz
15%
Self-pollination
72%
Cross-pollination
7%
Fertilization
5%
Germination
1
Which of the following is a secondary sexual characteristic that appears in human males during puberty?
Anonymous Quiz
7%
Enlargement of ovaries
10%
Onset of menstruation
18%
Widening of the pelvis
65%
Deepening of the voice
1
The ability of a cut part of an organism like Planaria to develop into a whole new individual is known as:
Anonymous Quiz
6%
Budding
17%
Fragmentation
73%
Regeneration
5%
Fission
2