Name the compound formed when Haemoglobin combines with:

(a) Carbon monoxide

(b) Oxygen

The Amazon rain forest is referred to as the ‘Lungs of the Earth’. It plays an important role in climate regulation through photosynthesis. However, this delicate ecosystem is facing threats from deforestation, climate change and human encroachment which can lead to irreversible environmental consequences.

(a) How does photosynthesis contribute to the Amazon rain forests’ reputation as the ‘Lungs of the Earth’?

(b) In what way is the environment affected by deforestation?

(c) Name the pigment that captures the light energy during photosynthesis.

Given below is a set of terms.

Medullary Sheath, Myelin Sheath, Dendron, Meninges, Nissl’s granules

(a) Choose the odd term from the above list.

(b) Mention the category to which the other terms belong.

Human kidney is a complex organ. Kidneys receive blood through blood vessels which directly branch from the Aorta. Inside each kidney are tiny functional units which filter the blood.

(a) Name the blood vessels that supply blood to the kidneys.

(b) Which are the functional units that filter the blood?