Class 12 Biology MCQs
Sexual Reproduction in Flowering Plants MCQs
Sexual Reproduction in Flowering Plants — MCQs 1. Double fertilisation is characteristic of: A. ferns B. angiosperms C. mosses D. algae Answer: B 2. The male gametophyte in flower…
Human Reproduction MCQs
Human Reproduction — MCQs 1. Fertilisation in humans occurs in the: A. uterus B. fallopian tube C. ovary D. vagina Answer: B 2. Sperm are produced in the: A. ovary B. testis C. pr…
Principles of Inheritance and Variation MCQs
Principles of Inheritance and Variation — MCQs 1. The phenotypic ratio of a monohybrid cross in F2 is: A. 1:1 B. 3:1 C. 9:3:3:1 D. 2:1 Answer: B 2. The ABO blood group is an examp…
Molecular Basis of Inheritance MCQs
Molecular Basis of Inheritance — MCQs 1. In DNA, adenine pairs with: A. guanine B. thymine C. cytosine D. uracil Answer: B 2. DNA replication is: A. conservative B. semiconservati…
Microbes in Human Welfare MCQs
Microbes in Human Welfare — MCQs 1. Curd is formed from milk by: A. yeast B. lactic acid bacteria C. fungi D. viruses Answer: B 2. Penicillin is obtained from a: A. bacterium B. f…
Biotechnology – Principles and Processes MCQs
Biotechnology – Principles and Processes — MCQs 1. Restriction enzymes are also called molecular: A. glue B. scissors C. needles D. pumps Answer: B 2. DNA fragments are joined by:…
Organisms and Populations MCQs
Organisms and Populations — MCQs 1. Logistic growth gives a curve shaped like the letter: A. J B. S C. V D. L Answer: B 2. An interaction where both species benefit is: A. predati…
Ecosystem MCQs
Ecosystem — MCQs 1. Energy flow in an ecosystem is: A. cyclic B. unidirectional C. bidirectional D. random Answer: B 2. The pyramid that is always upright is the pyramid of: A. nu…
Biodiversity and Conservation MCQs
Biodiversity and Conservation — MCQs 1. Biodiversity is highest near the: A. poles B. equator C. deserts D. mountains Answer: B 2. A national park is an example of: A. ex situ con…