NTSE Biology Reproduction Plants MCQs

Question: What is micropropagation ?

• a) Germination of seeds with cotyledon above the soil
• b) A technique to obtain new plants by culturing, the cells or tissue is culture medium
• c) The mature stage of endosperm
• d) To manufacture hormones

Answer: A technique to obtain new plants by culturing, the cells or tissue is culture medium

Question: Which of the following is propagated by means of cuttings ?

• a) Sugarcane
• b) Coffee
• c) Citrus
• d) All of these

Answer: Sugarcane

Question: During bud formation the bud remains attached to parental body

• a) A for nutritional requirement
• b) For support
• c) Both A & B
• d) None of them are correct

Answer: Both A & B

Question: Development and formation of pollen grains in anther of the stamen is known as

• a) Microporogenesis
• b) Fertilization
• c) Megasporogenesis
• d) Spermiogenesis

Answer: Microporogenesis

Question: Cross pollination is advantageous because is results in

• a) Formation of weaker progeny
• b) Formation of better progeny
• c) Formation of male offspring
• d) Formation of female offspring

Answer: Formation of better progeny

Question: Seeds are called products of sexual reproduction because they

• a) give rise to new plants
• b) are formed by fusion of gametes
• c) are formed by fusion of pollen tubes
• d) can survive for longer period

Answer: are formed by fusion of gametes

Question: Syngamy refers to

• a) fusion of one of the sperm with secondary nucleus
• b) fusion of one of the sperm with the egg
• c) fusion of one of the sperm with an egg and the other with the secondary nucleus
• d) fusion of one of the sperm with synergid

Answer: fusion of one of the sperm with the egg

Question: An organism that shows sexual reproduction but lacks a proper nucleus in its cells. It can obtain nutrition in autotrophic as well as heterotrophic mode and possess a distinct cell wall is

• a) Mycoplasma
• b) Blue green algae
• c) Bacteria
• d) Protozoa

Answer: Bacteria

Question: Double fertilization is

• a) fusion of two male gametes with egg
• b) fusion of one male gamete with egg and the other male gamete with the polar nuclei
• c) both are correct
• d) both are incorrect

Answer: fusion of one male gamete with egg and the other male gamete with the polar nuclei

Question: The structure meant for the nourishment of developing embryo in case of plants is

• a) Pollen tube
• b) Endosperm
• c) Both A & B are correct
• d) None of these

Answer: Endosperm

More Questions.....................

Question: Phytohormones are

• a) Hormones regulating growth from seed to adulthood
• b) Growth regulators synthesized by plants and influencing, physiological process
• c) Hormones regulation flowering.
• d) Hormones regulating secondary growth.

Answer: Growth regulators synthesized by plants and influencing, physiological process

Question: In case of spore formation the presence of cytoplasm is

• a) Little
• b) More
• c) Equal to the concentration of nucleus
• d) Uncertain

Answer: More

Question: Part of plant used for culturing is called

• a) Scion
• b) Explant
• c) Stock
• d) Callus

Answer: Explant

Question: The function of another is

• a) to produce ubisch bodies
• b) to produce pollen grains
• c) to store and protect pollen grains
• d) all of the above

Answer: to produce pollen grains

Question: The polar nuclei present inside the embryo sac are

• a) Diploid
• b) Haploid
• c) Unknown
• d) None of these

Answer: Diploid

Question: Double fertilization is fusion of

• a) Two eggs
• b) Two eggs and polar nuclei with pollen nuclei
• c) One male gamete with egg and other with synergid
• d) One male gamete with egg and other with secondary nucleus

Answer: One male gamete with egg and other with secondary nucleus

Question: In a fertilized ovule n, 2n and 3n conditions occur respectively in

• a) Antipodal, egg and endosperm
• b) Egg, zygote and endosperm
• c) Endosperm, zygote and egg
• d) Antipodals, synergids and integuments

Answer: Egg, zygote and endosperm

Question: What is micropropagation ?

• a) Germination of seeds with cotyledon above the soil
• b) A technique to obtain new plants by culturing, the cells or tissue is culture medium
• c) The mature stage of endosperm
• d) To manufacture hormones

Answer: A technique to obtain new plants by culturing, the cells or tissue is culture medium

Question: Which of the following is propagated by means of cuttings ?

• a) Sugarcane
• b) Coffee
• c) Citrus
• d) All of these

Answer: Sugarcane

Question: Development and formation of pollen grains in anther of the stamen is known as

• a) Microporogenesis
• b) Fertilization
• c) Megasporogenesis
• d) Spermiogenesis

Answer: Microporogenesis