Biology questions and answers

Biology Questions and Answers

How well do you understand living things and their vital processes? Whether you are preparing for JAMB, WAEC, NECO and Post-UTME, these Biology past questions and answers cover such subjects as the chemistry of life, botany, evolution, genetics, ecology etc to help you know what to expect, improve your speed and confidence and be really prepared for the actual aptitude test.

26.

A sudden change in the genetic composition of an organism is termed

A.

mutation

B.

linkage

C.

variation

D.

epistasis

Correct answer is A

Mutation is the process by which there is a permanent alteration in the DNA sequence of an organism's genome. These changes can occur due to various factors such as exposure to radiation, chemicals, or errors during DNA replication. Mutations can happen in somatic cells, which affect only the individual, or in germ cells (egg or sperm cells), which can be passed on to offspring.

27.

Paternity disputes could be resolved accurately through

A.

finger printing

B.

tongue rolling

C.

DNA test

D.

blood group

Correct answer is C

Paternity testing, also known as DNA testing for paternity, is a reliable and accurate method used to determine the biological father of a child. It is based on the analysis of DNA (deoxyribonucleic acid), which is the genetic material found in cells. Every individual inherits their DNA from their biological parents, half from the mother and half from the father.

28.

The capturing and digestion of insects by a pitcher plant is a special form of nutrition that is

A.

heterotrophic

B.

saprophytic

C.

chemosynthetic

D.

autotrophic

Correct answer is A

Heterotrophic nutrition is a type of nutrition in which an organism obtains its food by consuming organic matter from other organisms. In the case of pitcher plants, they capture and digest insects as a source of nutrients to supplement their diet, especially in nutrient-poor environments. This carnivorous adaptation is a specialized form of heterotrophic nutrition, as the pitcher plant relies on consuming other living organisms (insects) to meet its nutritional needs. The pitcher plant is a carnivorous plant that has modified leaves forming pitcher-like structures.

29.

The following activities are associated with termites except

A.

nuptial flight

B.

searching for food

C.

communication

D.

pollination

Correct answer is D

Pollination is not an activity associated with termites. Pollination is primarily carried out by various animals, such as bees, butterflies, birds, and bats, which transfer pollen from one flower to another, leading to fertilization and seed production. While some insects, like bees, are important pollinators, termites are not known for their role in pollination.

30.

Use the information below to answer the question
I - making shoes from crocodile skin
II - making tables with plastic
III - using elephant tusk for decoration
IV - using firewood for cooking

In order to avoid some of the acts that would have negative effects on conservation. Government should

A.

encourage over-utilization of forest resources

B.

enact and enforce laws towards conservation of resources

C.

encourage indiscriminate killing of wildlife

D.

promote felling of trees without planting new ones

Correct answer is B

In order to avoid some of the acts that would have negative effects on conservation. Government should enact and enforce laws towards conservation of resources


Sub-categories

WAEC