Free Reproduction MCQs with Answers

• A. New genetic combinations leading to variation
• B. Increased biomass production
• C. Enhanced seed viability
• D. Extended seed dormancy

Explanation: Sexual reproduction always involves meiosis (zygotic in case of haploid individuals and gametic in case of diploid individuals).

• A. It has an almost equal quantity of cytoplasm as an uncleaved zygote but much more DNA
• B. It has far less cytoplasm as well as less DNA than an uncleaved zygote
• C. It has more or less an equal quantity of cytoplasm and DNA as in an uncleaved zygote
• D. It has more cytoplasm and more DNA than an uncleaved zygote

Explanation: The correct option is: a) It has almost equal quantity of cytoplasm as an uncleaved zygote but much more DNA.Explanation of each option:a)…

• A. Immature eggs
• B. Mature eggs
• C. Sperms
• D. Polar bodies

Explanation: Fertilizin is a glycoprotein that plays a role in species-specific sperm-egg recognition. It is emitted by the eggs.

• A. Mature sperm cell
• B. They are all approximately the same size
• C. Mature egg cell
• D. Polar body

Explanation: The mature egg cell is the largest in size among the options given. It is about 120 micrometers in diameter, while a mature sperm cell is…

• A. 100 ova and 100 sperms
• B. 50 ova and 200 sperms
• C. 200 ova and 50 sperms
• D. 50 ova and 100 sperms

Explanation: Spermatogenesis is the process of formation of spermatid (n) from spermatogonia(2n).

• A. Fertilized egg
• B. Porifera
• C. Zygote
• D. None of these

Explanation: In sexual reproduction, each parent produces specialized sex cells through meiosis.The male produces sperm (male gamete).The female…

• A. Internal fertilization
• B. Viviparous
• C. Oviparous
• D. Both a & b

Explanation: In viviparity, the young develop within the female, receiving nourishment from the mother's blood through a placenta.

• A. External fertilization leading to embryo formation
• B. Internal fertilization leading to embryo formation
• C. External development leading to embryo formation
• D. None of the above

Explanation: Viviparous animals give birth to their children as the embryo is formed within the mother's body and continues to grow there.

• A. Zygote
• B. Egg cell
• C. Sperm
• D. Somatic cell

Explanation: In the process of cloning, a somatic cell nucleas is extracted and is inserted into the egg cell who doesnt have one either because it was…

• A. Archenteron
• B. Blastocoel
• C. Coelom
• D. Alimentary canal

Explanation: The blastopore is the opening that forms during gastrulation, a key process in early embryonic development.

• A. Opening of neural tube
• B. Opening of gastrocoel
• C. Future anterior end of embryo
• D. Found in blastula

Explanation: Blastopore is the opening by which the cavity of the gastrula (gastrocoel), communicates with the exterior.

• A. Chiasmata
• B. Kinetochore
• C. Barr bodies
• D. Autosomes

Explanation: Barr body is a structure consisting of a condensed X chromosome that is found in nondividing nuclei of female mammals.

• A. Similar to parents
• B. Identical to parents
• C. Different to parents
• D. None of these

Explanation: Children who are asexually born are exactly like their parents. They are indistinguishable except in age and size from their parents.

• A. Duck
• B. Goat
• C. Frog
• D. Lizard

Explanation: Goat is the correct answer because it conducts fusion of gametes wherein there is internal fertilization of embryo and a birth.

• A. Sperm
• B. Egg
• C. None of the options given
• D. Zygote

Explanation: Fertilization joins two haploid gametes into a diploid zygote, the first cell of a new organism.

• A. Internal fertilization leads to internal development of the embryo
• B. Organisms that walk on digits
• C. Organisms that lay eggs
• D. Organisms that store infants in pouches

Explanation: Animals that have embryos develop inside their body are called ''viviparous animals''.

• A. Zona Pellucida
• B. Zona Vasculosa
• C. Zona radiata
• D. None of them

Explanation: Among the given options, the correct structure that surrounds the primary oocyte in mammals is the Zona Pellucida.Zona Pellucida: The Zona…

• A. Corpus luteum
• B. Graafian follicle
• C. Primary follicle
• D. Germinal epithelium

Explanation: The secondary oocyte is ovulated from a structure known as the Graafian follicle, also referred to as the mature or tertiary follicle.

• A. Epididymis
• B. Vas deferens
• C. Female reproductive tract
• D. Rete testis

Explanation: The sperms in the female's genital tract are made capable of fertilising the egg by secretions of the female genital tract.

• A. 100 sperms and 25 ova
• B. 50 sperms and 25 ova
• C. 100 sperms and 30 ova
• D. 100 sperms and 100 ova

Explanation: In males, primary spermatocytes are diploid (2N) cells containing 46 chromosomes.