STD 11 - 19. Chemical coordination and integration — NEET STD 11 Science — Question

Which part of the brain is like a defense castle controlling moods and plays an important role in emotional behaviour, such as aggression and remembering fear?

The blood vessel which brings oxygenated blood from lungs towards the heart of frog is

The membranes enclosing the brain and spinal cord are known as

The joint of femur, with pelvic girdle is

Given below are four statements pertaining to separation of DNA fragments using Gel electrophoresis. Identify the incorrect statements.
(a) DNA is negatively charged molecule and so it is loaded on gel towards the Anode terminal.
(b) DNA fragments travel along the surface of the gel whose concentration does not affect movement of DNA.
(c) Smaller the size of DNA fragment, larger is the distance it travels through it.
(d) Pure DNA can be visualized directly by exposing to UV radiation.
Choose correct answer from the options given below:

Assertion : Heart failure is not the same as cardiac arrest or a heart attack.
Reason: In heart failure heart stops beating.

One of the special characters of coelenterata only is the occurrence of

‘Asthama' is due to