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The function of testis in males is …………………………………

In the experiment shown in the diagram, water level rises in the bent tube, because

Blood plasma carries $C{O}_2$ to lungs in the form of ___

What is meant by 'systolic pressure' and 'diastolic pressure' ? What are their normal values ?

Whose karyotype is shown in following diagram?

Which word pairs can be used to fill in the blanks?

The _____ was too big for the little girl who passed right through it.

The young member of the male human species is addressed as a lad or a _____.

Just below the root cap lies the region of

The energy derived from the ATP molecules synthesised during respiration is used to drive:

What are the causes of albinism?

During which phase of the cell cycle is DNA synthesized?

Define behaviour.

Outermost protective layer around the foetus

In humans, increased rate of heartbeat is due to the release of ______ into the bloodstream.

During the respiration of an organism A, 1 molecule of glucose produces 2 ATP molecules whereas, in the respiration of another organism B, 1 molecule of glucose produces 38 ATP molecules.
(a) Which organism is undergoing aerobic respiration?
(b) Which organism is undergoing anaerobic respiration?
(c) Which type of organism, A or B, can convert glucose into alcohol?
(d) Name one organism which behaves like A.
(e) Name two organisms which behave like B.

(a) Why is diffusion insufficient to meet the oxygen requirements of large multicellular organisms like humans ?
(b) What type of arrangement exists in the bodies of large animals to meet their oxygen requirements adequately ?
(c) What advantage a terrestrial animal has over an aquatic animal with regard to obtaining oxygen for respiration ?

The chemical substances which act against antigens are called __________ .

In the pictures below, mosquito and bread mould are shown. They differ in their nutrition mode because ………………

Read the following statements about pancreas.
A. It is a heterocrine gland.
B. It secretes two important hormones, insulin and glucagon.
C. It is the second largest endocrine gland.
D. It consists of a bundle of cells called Islets of Langerhans.
Which of the above-said statement(s) is/are correct?

Which of the following is not a function of cortisol?

Regarding the assertion and reason, select the right option.

Assertion [A]: An individual cannot be infected by the same strain of chicken pox for the second time in his/her life.

Reason [R]: Memory immune cells trigger immediate and complete secondary response during a second encounter.

Division of the nucleus during cell division is called __________.

Name the disease caused by the deficiency of thyroxine hormone in the body.

Accidental pituitary stalk damage will cause all except

The first scientist who proposed his theory for the evolution was

(a) Darwin

(b) Mendel

(c) Lamarck

(d) Wallace

Name the two categories of hormones secreted by the adrenal cortex. [2 MARKS]

Presence of excessive amount of urea in blood is known as

(a) What is common for Cuscuta, ticks and leeches?
(b) Name the substances on which the following enzymes act in the human digestive system :
(i) Trypsin (ii) Amylase (iii) Pepsin (iv) Lipase
(c) Why the absorption of digested food occurs mainly in the small intestine?

Why do the walls of the heart differ in thickness ?

A person suffering from kidney stones is advised to avoid excess intake of spinach and beetroot in his diet. What could be the possible reason?

Which of the following are the effects of ethylene on plants?

Why do small plants yield more and tall plants yield less?

Consider the following statements:
Statement I: The amount of moisture in the atmosphere is related to altitude.
Statement II: The capacity to hold moisture in the form of water vapor is related to temperature.

The forelimbs of mammals consist of_____.

Which of these is NOT included in the list of biodiversity hotspots of india?

What are the different modes of reproduction in multi-cellular organisms?

When blood test is performed on a patient it reveals high level of carboxyhemoglobin. This observation confirms increased exposure to:

Pro-thrombin is converted into thrombin by___.

How do auxins promote growth of tendrils around a support?

Collection of methods used for correction of a gene defect responsible for a disease is called__________

The fluid present between cell membrane and nucleus is called as ___ .

Question 7
Outline a project which aims to find the dominant coat colour in dogs.

What is the scientific name of the plant that was chosen for genetic experiments?

Enter 2 words or less.

Which of the following are characteristics of primary immune response?

Which of the following correctly represents the number of autosomes and allosomes in human beings?