STD 11 - 4. Animal kingdom — NEET STD 11 Science — Question

Respiratory pigment in cockroach is

Which one influences the activity of kidney?

Choose the correct statement

Which statements are true regarding law of segregation of principles of inheritance ?
(i) Characters are controlled by discrete units called factors.
(ii) Expression of both parental characters in a monohybrid cross in the F₁.
(iii) Alleles do not show any blending in F₁.
(iv) Factors are expressed in pairs.
(v) In a similar pair of factors one member of the pair dominates (dominant) the other (recessive).
(vi) Both the characters are recovered as such in the F₂. generation though one of these is not seen at the F₁ stage.
(vii) Parents contain two alleles during gamete formation, the factors or alleles of a pair segregate from each other such that a gamete receives only one of the two factors.

Dolphins are

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:

Statement I: Humoral immune response is responsible for the graft rejection.
Statement II: Colostrum has abundant IgM antibodies.

Estrogen is secreted by

Select the true statement

Which pair of rib not connected ventrally?