Which among the following is immortal?
1. Sea algae
2. Amoeba
3. Plants grown by vegetative propagation
4. Every living organism is mortal

Subtopic:  Introduction |
 87%
From NCERT
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The females of placental mammals exhibit cyclical changes in the activities of ovaries and accessory ducts as well as hormones during the reproductive phase. In non-primate mammals it is known as
1. Oestrus cycle
2. Menstrual cycle
3. Reproductive cycle
4. Sexual cycle

Subtopic:  Sexual Reproduction |
 90%
From NCERT
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There are various types of reproduction. The type of reproduction adopted by an organism depends on:
1.The habitat and morphology of the organism
2.Morphology of the organism
3.Morphology and physiology of the organism
4.The organism’s habitat, physiology and genetic makeup

Subtopic:  Introduction |
 82%
From NCERT
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There is no natural death in single-celled organisms like Amoeba and bacteria because:
1. They cannot reproduce sexually
2. They reproduce by binary fission
3. Parental body is distributed among the offspring
4. They are microscopic

Subtopic:  Asexual Reproduction |
 73%
From NCERT
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Offspring formed by sexual reproduction exhibit more variation than those formed by asexual reproduction because:
1.Sexual reproduction is a lengthy process
2.Gametes of parents have qualitatively different genetic composition
3.Genetic material comes from parents of two different species
4.Greater amount of DNA is involved in sexual reproduction.

Subtopic:  Sexual Reproduction |
 60%
From NCERT
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Non-flagellate spores are called conidia. In which organism they are seen?
1.Penicillium
2. Hydra
3. Chlamydomonas
4. Amoeba

Subtopic:  Asexual Reproduction |
 92%
From NCERT
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Development of zygote taking place outside the body is called?
1. Viviparous
2. Oviparous
3. Omnivorous
4. Surrogacy

Subtopic:  Events during Sexual reproduction |
 87%
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Parthenogenesis is the development of an organism directly from:
1.Female gametes
2.Vegetative cells
3.Fertilized ovum
4.None

Subtopic:  Events during Sexual reproduction |
 79%
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Which type of stem modification is seen in banana?
1.Stem tuber
2.Bulb
3.Corn
4.Rhizome

Subtopic:  Asexual Reproduction |
 86%
From NCERT
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In which of the following, gametes are released in the surrounding medium
1.Fishes
2.Amphibians
3.Earthworm
4.Both 1 and 2

Subtopic:  Events during Sexual reproduction |
 93%
From NCERT
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