Very Short Answer Type Question
Question 1. Nutrition, Respiration and …………. are essential life processes.
Ans: Reproduction is essential life processes.
Question 2. The information source for making proteins is……………..
Ans: DNA (Deoxyribonucleic acid).
Question 3. In-built tendency for variation during reproduction leads to………………
Ans: Genetic Diversity.
Question 4. ……………….. is commonly known as bread mould.
Question 5. In……………., the splitting of 2 cells takes place in any plane.
Ans: In binary fission,
Question 6. Define niche.
Ans: Niche refers to the specific role or position occupied by an organism within its ecosystem, including its habitat, interactions with other organisms, and its utilization of resources.
Question 7. What happens to a slice of bread kept in a cool, dark and moist place for 2-3 days?
Ans: If a slice of bread is kept at a cool, dark, and moist place for 2-3 days, it is likely to undergo mold growth due to the presence of moisture and favourable conditions for fungal growth.
Question 8. Name any four sexually transmitted diseases.
Ans: Four sexually transmitted diseases include:
1. HIV/AIDS (Human Immunodeficiency Virus/Acquired Immunodeficiency Syndrome)
Question 9. Define seed.
Ans: A seed is a mature fertilized ovule of a plant that contains the embryonic plant, stored nutrients, and a protective seed coat. It is capable of germination and developing into a new plant.
Question 10. Define fruit.
Ans: A fruit is the mature ovary of a flowering plant that typically contains seeds. It develops from the fertilized flower and serves as a means of seed dispersal. Fruits are often sweet or fleshy, but they can also be dry, depending on the type of plant
Question 11. Kala-azar is:
(i) Bacterial disease (ii) Viral disease (iii) Protozoan disease (iv) Fungal disease
Ans: (iii) Protozoan disease.
Question 12. Multiple fission occurs in:
(i) Amoeba (ii) Yeast (iii) Plasmodium (iv) Leishmania
Ans: (iii) Plasmodium.
Question 13. The root system grows out from:
(i) Plumule (ii) Radicle (iii) Embryo (iv) All of these
Ans: (ii) Radicle.
Question 14. Permanent fertility control in males is achieved by:
(i) Tubectomy (ii) Vasectomy (iii) Anatomy (iv) Pills
Ans: (ii) Vasectomy.
Question 15. The essential parts of a flower are:
(i) Sepals and petals (ii) Sepals and stamens (iii) Petals and pistils (iv) Stamens and pistils
Ans: (iv) Stamens and pistils.
Question 16. Papaya is a unisexual flower.
Question 17. Progesterone is secreted by the testes.
Question 18. Yeast reproduces by regeneration.
Question 19. Pistil is the female part of the plant.
Question 20. AIDS is a bacterial disease.