Biology in Agriculture Questions

Objective Questions

What is the primary aim of agriculture?

(A) To provide natural habitats for wildlife (B) To preserve endangered plant species (C) To provide adequate food for the increasing human population (D) To ensure all plants grow to their full potential

Correct Answer: (C) To provide adequate food for the increasing human population

Which of the following is NOT a challenge faced in agriculture?

(A) Food preservation (B) Food storage (C) Lack of government involvement (D) Food wastage

Correct Answer: (C) Lack of government involvement

In botanical classification, the scientific name of a plant consists of:

(A) Family and order (B) Genus and species (C) Kingdom and class (D) Class and phylum

Correct Answer: (B) Genus and species

Which group of plants lacks true roots, stems, and leaves?

(A) Bryophyta (B) Angiosperms (C) Gymnosperms (D) Thallophyta

Correct Answer: (A) Bryophyta

Which of the following plant groups reproduces by spores and has no flowers?

(A) Pteridophyta (B) Monocotyledons (C) Dicotyledons (D) Angiosperms

Correct Answer: (A) Pteridophyta

Which of these plant groups is characterized by seeds that are enclosed in a fruit?

(A) Gymnosperms (B) Bryophytes (C) Angiosperms (D) Thallophytes

Correct Answer: (C) Angiosperms

Which of the following is a characteristic of monocotyledonous plants?

(A) Two seed leaves (B) Taproot system (C) Parallel venation (D) Net-veined leaves

Correct Answer: (C) Parallel venation

Plants grown mainly for economic profit rather than food are called:

(A) Food crops (B) Cash crops (C) Root crops (D) Vegetable crops

Correct Answer: (B) Cash crops

Which of the following is an example of a root crop?

(A) Rice (B) Maize (C) Yam (D) Beans

Correct Answer: (C) Yam

Which group of crops is rich in protein?

(A) Cereal crops (B) Oil plants (C) Legumes (D) Latex plants

Correct Answer: (C) Legumes

Which of the following best describes subsistence farming?

(A) Farming to provide food for the farmer and their family (B) Farming mainly for profit (C) Large-scale commercial farming (D) Farming with the use of advanced machinery

Correct Answer: (A) Farming to provide food for the farmer and their family

Which of the following is a feature of commercial agriculture?

(A) Small-scale farming (B) High use of mechanization (C) Low crop yield (D) Traditional farming techniques

Correct Answer: (B) High use of mechanization

Which of these is NOT an advantage of commercial farming?

(A) High crop yield (B) Increased income for farmers (C) Employment opportunities (D) Reduced biodiversity

Correct Answer: (D) Reduced biodiversity

Which of the following agricultural practices helps conserve soil fertility?

(A) Continuous cropping (B) Crop rotation (C) Overgrazing (D) Deforestation

Correct Answer: (B) Crop rotation

Which of these is a disadvantage of subsistence farming?

(A) Low cost of production (B) Requires little land (C) Sustainable food supply (D) Limited income generation

Correct Answer: (D) Limited income generation

Which type of irrigation system is the most water-efficient?

(A) Flood irrigation (B) Drip irrigation (C) Sprinkler irrigation (D) Surface irrigation

Correct Answer: (B) Drip irrigation

What is the main advantage of organic farming?

(A) Higher crop yield (B) Environmentally friendly (C) Faster plant growth (D) Lower labor costs

Correct Answer: (B) Environmentally friendly

Which of these is NOT a method of soil conservation?

(A) Contour plowing (B) Mulching (C) Terracing (D) Overgrazing

Correct Answer: (D) Overgrazing

Which of the following contributes most to soil erosion?

(A) Deforestation (B) Organic farming (C) Crop rotation (D) Mulching

Correct Answer: (A) Deforestation

What is the primary purpose of crop rotation?

(A) To increase pesticide use (B) To grow the same crop repeatedly (C) To maintain soil fertility (D) To reduce the need for irrigation

Correct Answer: (C) To maintain soil fertility

Theory Questions

State two differences between monocotyledonous and dicotyledonous plants.

Give two examples of each of the following groups of plants. (a) cereals (b) fibres (c) legumes (d) beverages (e) oils

State four effects of bush burning on ecological system

State three advantages and disadvantages each of the following:

i. Shifting cultivation
ii. Crop rotation
iii. Mixed farming
iv. Mixed cropping
v. Pastoral farming
vi. Mono cropping
vii. Bush fallowing

State two differences between angiosperms and gymnosperms