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20. Define osmoregulation. Which hormonal factor is responsible for drinking of water in human beings?

Which of the following statement is false with regard to the human brain?

Which of the following statement(s) is/are true?

Question 5(b)
Solution in brief.
Protected forests are also not completely safe for wild animals. Why?

The existence of root pressure can be demonstrated by

Growth hormone treatment induces formation of seedless fruits. Such fruits are called

Name the following :

(a) The body part in which the testes are present in a human male.

(b) The part where the sperms are produced in the testes.

(c) The fully developed part of the ovary containing a mature egg.

(d) The accessory gland in human males whose secretion activates the sperms.

(e) The tubular knot fitting like a cap on the upper side of the testis.

What will happen, if all plants die a day?

I want 2 to 3 lines answers.

Which drug does not fit the category of narcotics?

The technique that distinguishes people based on their DNA pattern is called _____

Compare the nervous system and endocrine system (hormonal system) for control and coordination in humans.

Differentiate between osmo regulation and excretion

Statement 1: All human beings have common ancestry.

Statement 2: Human beings evolved from chimpanzees and chimpanzees in turn evolved from monkeys.

Name the two acids that are present in add rain.

The hydroxide ion concentration of a solution is $1.0\times {10}^{-9}$ M. What is the pH of this solution? State whether the given solution is acidic, basic or neutral.

The deficiency of vitamin A causes a reduction in the production of photopsin in the rod cells.

Binary fission in amoeba and budding in yeast are identical in the mechanism. But the basic difference is ……………………………………….

Which of the following does not have a nucleus?

Name few nuclear power plants of India. [5 MARKS]

In plants, meiosis takes place in

An animal cell, a plant cell and a bacterium share the following structural features:

Sam was given the following setups to find out oxygen is required for respiration to take place in peas. He chose set ups A and C for his experiment. His teacher told him that he had made the wrong choice because there is no __(experimental set-up/ control set-up) in his choice.

Phyto hormones and thier functions

Why pancreas are both endocrine and exocrine system .exp

About dolly sheep

Instead of a leafy twig if we take a single flower with a long stalk in a test tube and fill it with water covered by a layer of oil on its surface will there be any loss of water?

The endocrine gland whose malfunctioning causes diabetes disease is :

(a) pituitary

(b) pineal

(c) parathyroid

(d) pancreas

Vasectomy and tubectomy make the individuals

Match the following:

$\begin{array}{cc}\text{Column I}& \text{Column II}\\ \text{i. Pressure filtration}& \text{a. Urea and uric acid}\\ \text{ii. Selective reabsorption}& \text{b. Penicillin}\\ \text{iii. Tubular secretion}& \text{c. Water, glucose, amino acids}\\ \text{iv. Excretion}& \text{d. Water, glucose, urea}\end{array}$

A parent that produces only one type of gamete for an allele is called:

Continuous exposure to noise created by heavy traffic, aircrafts and trains can lead to

What is the nature of the image formed on the retina of the eye?

What cells of pancreas is degenerated when a person is affected by diabetes

Complete the following dialogue by picking the correct option.

Doctor: How long have you been having these dizzy spells?

Patient: __________________________

Doctor: Why didn’t you come to me earlier?

Patient: I never thought it could be something that merits attention.

What is the end product of fat digestion?

How is the structure of organs in our body well adapted to perform a specific function?

Match the excretory functions with the parts of the excretory system.

$\begin{array}{cc}Functions& Partsofexcretorysystems\\ A.Ultrafiltration& 1.Henl{e}^{\prime }sloop\\ B.Concentrationofurine& 2.Ureter\\ C.Transportofurine& 3.Urinarybladder\\ D.Storageofurine& 4.Malpighiancorpuscle\end{array}$

The disc like tissue embedded in the uterine wall which provides nutrition to the embryo within the womb is known as