Structural Organisation in Animals — BIOLOGY STD 11 Science — Question

Glutamic acid plays an essential role in synthesis of amino acid.

1. Name the excretory organs found in Aschelminthes and leeches.
2. Name the arterioles through which blood enters and leaves the glomerulus.
3. Name the vessel of peritubular capillaries that runs parallel to the loop of Henle.

Where is sucrose, the final product of photosynthesis, formed?

Protoxylem is the first formed xylem. If the protoxylem lies next to phloem, what kind of arrangement of xylem would you call it?

What kind of muscle fibres are richly found in the extensor muscles of the back? What characteristics enable these fibres to serve their purpose?

What is the role of veins and veinlets in leaves?

What is the epidermal hair found on the stem called?

Oil does not dissolve in water. Give scientific explanation.

How many cranial and spinal nerves are present in frog?

The enzyme that works only in the presence of a cofactor or coenzyme is called.