The Fundamental Unit of Life — Science STD 9 — Question

Female Anopheles mosquito is a carrier of a pathogen that causes:

1. Yellow fever.
2. Filariasis.
3. Malaria.
4. Dengue.

Mitochondria are the seat of:

1. Anaerobic respiration.
2. Trapping of sunlight.
3. Krebs cycle.
4. Calvin cycle.

Wind breaks are:

1. Raising edges of fields.
2. Growing grasses altemating with crops.
3. Mud walls.
4. Rows of trees and shrubs.

Describe various causes of water pollution.

In the Pila, the gastropod mollusk, the organ of the locomotion is:

1. Mantle.
2. Foot.
3. Tentacles.
4. Legs.

Sex organs are unicellular and non-jacketed in:

1. Algae.
2. Bryophytes.
3. Pteridophytes.
4. Gymnosperms.

Which of the following classes has largest number of animals?

1. Mammals.
2. Pisces.
3. Insect.
4. Reptilian.