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Whether oxygen diffuses from the alveoli into the blood or not is dependent upon the partial pressure of _______________.

Explain the process of glycolysis in detail.

The concentration of macro nutrients in dry matter is

Match the following:

$\begin{array}{cc}\text{(i) Amphibians and most reptiles}& \text{A. 2-chambered heart}\\ \text{(ii) Birds and mammals}& \text{B. 3-chambered heart}\\ \text{(iii) Fish}& \text{C.4-chambered heart}\end{array}$

What is the significance of hepatic portal system in the circulatory system?

What is stomatal apparatus? Explain the structure of stomata with a labelled diagram.

Plants usually require micronutrients in very low concentrations. However, if the concentration of micronutrients increases, it leads to ________.

Which one of the following belongs to platyhelminthes?

Choose the correct statement.

Human body temperature is maintained by

Which of the following is not an excretory organ?

The hormones vasopressin (ADH) and oxytocin are released by the ___________.

The stage in which sewage water is treated biologically is called

Humus accumulates in the tundra region beaucse:

A crucial requirement for reproduction in Pteridophytes, which limited their expansion is _____

Match the following and choose the correct option from those given below.

Column A Column B

A.Molecular oxygen i. $\alpha$-ketoglutaric acid
B.Electron acceptor ii. Hydrogen acceptor
C.Pyruvate dehydrogenase iii. Cytochrome C
D.Decarboxylation iv. Acetyl Co A

(a) A-ii, B-iii, C-iv, D-i
(b) A-iii, B-iv, C-ii, D-i
(c) A-ii, B-i, C-iii, D-iv
(d) A-iv, B-iii, C-i, D-ii

Given below are four jumbled sentences. Select the option that gives their correct order.

$1:$ If you are used to having your stimulation come in from outside, your mind never develops its own habits of thinking and reflecting.

$2:$ Marx thought that religion was the opiate, because it soothed people’s pain and suffering and prevented them from rising in rebellion.

$3:$ If Karl Marx was alive today, he would say that television is the opiate of the people.

$4:$ Television and similar entertainments are even more of an opiate because of their addictive tendencies.

Hinge region in antibodies is important because it

Sir , pls could you elaborate about the mechanism of chemotropism in the pollen tubes of an angiospermic plant?

Assertion(A): Tape worm, Round worm and Pin worm are endoparasites of human intestine

Reason(R): Improperly cooked food is source of all intestinal infections

Identify the stages of Prophase I, going from left to right, from the images below.

Genes located on Y chromosomes are:

Which of the following classification is phylogenetic for entire plant group but among angiosperms it is not phylogenetic?