Correct Answer: A. reduced biochemical activities

Correct Answer: D) rate of decomposition

Explanation

In tropical rainforests, there is a lack of litter on the forest floor. This is because of the high rate of decomposition. Decomposition is the process by which dead organic matter is broken down into simpler forms. In the rainforest, the warm and moist conditions encourage decomposition to happen quickly, meaning that organic matter (such as leaves, twigs, and animal waste) does not accumulate on the forest floor. Instead, the nutrients are quickly recycled back into the ecosystem. The other options listed in the question are not correct. While rainfall is high in tropical rainforests, it is not the reason for the lack of litter on the forest floor. Similarly, temperature and light intensity do not play a significant role in the decomposition process. Understanding the process of decomposition is important because it plays a vital role in maintaining healthy ecosystems. Decomposition releases nutrients back into the soil, which can then be taken up by plants, which in turn provide food for other organisms. Without decomposition, the nutrients in organic matter would not be recycled, and the ecosystem would suffer

Correct Answer: A. glomerulus → Bowman's capsule→ Convoluted tubules → Henle's loop → collection tube

Correct Answer: B. denatured

Explanation

Denature means to destroy the properties of a protein or other biological macromolecule. If an enzyme (which is a protein) stops working, it has denatured.

Correct Answer: C) Conjugation

Explanation

Spirogyra is a type of green algae that reproduces sexually through a process called conjugation. This means that two individual Spirogyra cells come together and exchange genetic material to form zygotes. The zygotes then develop into new Spirogyra cells. The other options listed in the question are not correct. Fertilization is a similar process to conjugation, but it involves the fusion of gametes from two different individuals to form a zygote. Symbiosis and mutualism refer to types of relationships between different organisms, while reproduction is a general term that can refer to any process by which an organism produces offspring. It is important to understand the process of sexual reproduction in Spirogyra because it is an example of how different organisms can reproduce in different ways. This knowledge can help us understand the diversity of life on Earth.

Explanation

(a)(i) Agglutination;

The clumping together; of antigens or red blood cells/RBC; with the corresponding antibodies in the plasma; of incompatible blood groups/wrong blood group.

(ii)

(b) How each of the following organisms are adapted for obtaining food

(i)Mosquito larva - Possess a pair of ciliated mouth brushes; for creating water current to carry water with food particle into the mouth; - Its mouth brushes; filter food out of water and sweep it into the mouth.

(ii)Dodder plant - Possess haustoria; for penetrating host plant tissue to obtain food/water

(iii)Grasshopper

• Possess mandibles/heavy toothed jaw-like structures; for cutting/crushing food/plant materials/vegetation
• Possess maxillae; for directing food to mandibles/cutting/grinding food
• Labrun; for holding food/ plant materials/vegetation
• Labium; for guiding foods/prevent it from falling off.

Correct Answer: D. Nigerian red cross society

Correct Answer: A. axis vetebra

Correct Answer: B. the interrelationship between orgganisms and their environment

Correct Answer: B. Pollination is the process of transferring pollen from the anther to the stigma of a flower

Explanation

Pollination in plants refers to the transfer of pollen from the anther (male reproductive organ) to the stigma (female reproductive organ) of a flower.