STD 11 - 17. Locomotion and movement — NEET STD 11 Science — Question

Corticoids are the hormones, which are secreted by

In humans, testis functions as

Phylum of frog.

Choanocytes in Ascon-type of canal system form lining of

All the components of the nodal tissue are autoexcitable. Why does the SA node act as the normal pacemakar?

Which of the following are important for healthy ecosystem:
(a) Producer
(b) Herbivores
(c) Carnivores
(d) Decomposer

Match List-l with List-ll.

List-l	List-II
(A) Heroin	(I) Increased heart beat and blood pressure
(B) Marijuana	(II) Depressent
(C) Cocaine	(III) Sedative property
(D) Morphine	(IV) Build up of dopamine in the synapses

Choose the correct answer from the options given below:

Increase in the excitability of nerves and muscles leading to sustained contraction of the muscles of larynx, face, hand and feet is due to

Alleles are form of

Statement I: Sodium-potassium pump transport 2Na⁺ outwords for 3K⁺ into the cell.
Statement II: The electrical potential difference across the resting plasma membrane is called action potential.