Biology Questions and Answers for Examination | Biology Quiz MCQ

Molecular Basis of Inheritance

1. Which of the following RNAs should be most abundant in animal cell? A. r-RNA B. t-RNA C. m-RNA D. mi-RNA 2. The final proof for DNA as the genetic material came from the experiments of- A. Griffith B. Hershey and Chase C. Avery, Mcleod and McCarty D. Hargobind Khorana 3. During DNA replication, Okazaki

Principles of Inheritance

1. The gene for haemophilia is located on ‘X’chromosome. Hence it is normally impossible for a A. carrier mother to pass the gene to her son B. haemophilic father to pass the gene to his daughter C. haemophilic father to pass the gene to his son D. carrier mother to pass the gene to her

Reproductive Health

1. In case of a couple where the male is having a very low sperm count, which technique will be suitable for fertilisation? A. Intrauterine transfer B. Gamete intracytoplasmic fallopian transfer C. Artificial Insemination D. Intracytoplasmic sperm injection 2. The function of copper ions in copper releasing IUD’s is— A. they suppress sperm motility and

Human Reproduction

1. Ectopic pregnancies are referred to as- A. implantation of defective embryo in the uterus B. pregnancies terminated due to hormonal imbalance C. pregnancies with genetic abnormality D. implantation of embryo at site other than uterus. 2. Which of the following events is not associated with ovulation in human female? A. Release of secondary oocyte

Sexual Reproduction in Flowering Plants

1. Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by— A. Water B. Bee C. Wind D. bat 2. A dioecious flowering plant prevents both : A. Autogamy and Xenogamy B. Autogamy and Geitonogamy C. Geitonogamy and Xenogamy D. Cleistogamy and Xenogamy 3. Attractants and rewards are

Reproduction in Organisms

1. A true fruit is the one in which the fleshy part of the fruit is derived from- A. Thalamus B. Ovary C. inflorescene axis D. apocarpous gynoecium 2. A few plants exhibit unusual flowering phenomenon, which of them flower only once in their life time, generally after 50-100 years and produce large number of

Chemical Coordination

1. A temporary endocrine gland in the human body is— A. Pineal gland B. Corpus cardiacum C. Corpus Luteum D. Corpus allatum 2. GnRH, a hypothalamic hormone, needed in reproduction, acts on— A. anterior pituitary gland and secretion of LH and oxytocin. B. anterior pituitary gland and secretion of LH and and FSH C. posterior

Neural Control and Coordination

1. How many pairs of sympathetic ganglia are present in— A. 10 B. 12 C. 22 D. 32 2. The pneumotaxic centre and respiratory rhythm centres are respectively present in— A. pons and medulla oblongata B. corpus callosum and pons C. medulla oblongata and hypothalamus D. diencephalon and pons 3. The primary neurotransmitter at the

Locomotion and Movement

1. Myasthenia gravis is an example of- A. viral disease B. immunodeficient diseases C. autoimmune diseases D. allergic reaction. 2. An autoimmune disorder affecting the neuromuscular junction is— A. Emphysema B. Gout C. Myasthenia gravis D. CAD 3. The striated appearance of a myofibril is due to the distribution pattern of- A. fascicles B. actin

Excretory Products and their Elimination

1. Which of the following statements is correct? A. The ascending limb of loop of Henle is impermeable to water. B. The descending limb of loop of Henle is impermeable to water. C. The ascending limb of loop of Henle is permeable to water. D. The descending limb of loop of Henle is permeable to