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Which of the following is true about stomata?

Sweat glands is endocrine or exocrine?Give reason.

Kinetochore assembles on the:

When you look at an animal cell through a microscope, you'll see a large rounded structure almost at the centre of the cell. This organelle is called ___.

Write a short note on asexual reproduction in rhizopus.

Is there any disease caused by more or lack of platelets?

Which of the following statements are false regarding antibiotics?

Q34. Statements:

1. All horses are monkeys.

2. No monkey is a fox.

3. Some donkeys are pigs.

Conclusions:

I. No fox is a monkey.

II. Some monkeys are foxes.

III. Some foxes are not monkeys.

IV. No fox is a pig.

Which of the following are uricotelic animals?

Match the symptoms given below with the disease:
$\begin{array}{cc}\text{Column I}& \text{Column II}\\ \text{a) Protruding tongue, bloated abdomen, bradycardia, hypotension}& \text{i. Graves' disease}\\ \text{b) Exophthalmos, palpitations, jittery hands, inability to sleep}& \text{ii. Hyperthyroidism}\\ \text{c) Sluggishness, fogginess fatigue, impaired memory, mental lethargy}& \text{iii. Cretinism}\\ \text{d) Increased BMR, hyperexcitability, enlarged bones}& \text{iv. Hypothyroidism}\end{array}$

Autosomes are -

What are the two hormones secreted by the thyroid? Mention their functions.

The organism studied for Industrial melanism was a

(a) Butterfly

(b) Moth

(c) Honey bee

(d) Cockroach

Turgidity is important in a plant cell. Which of the following options support this statement?

I am similar to the plasma but colourless and contain less protein. I carry digested and absorbed fat from the intestine. Who am I?

Name two plants which are propagated by layering method.

What is hymen?

The opposite term for innate immunity is_______.

Given alongside is the diagram of an experimental set-up to demonstrate a certain phenomenon in plants.

(a) Name the phenomenon being demonstrated.

(b) What is the purpose of putting oil in the test tube ?

(c) What is the purpose of the spring balance in the set-up ?

(d) Would it make a difference if the experimental set-up is kept in bright sunshine ?

Match Column A appropriately with Column B.

$$\begin{array}{cc}ColumnA& ColumnB\\ \text{(i)The Central Nervous System constitutes of}& \text{1.Ears,Eyes,Nose}\\ \text{(ii)Reflex axes are formed in}& \text{2.Olfactory}\\ \text{(iii)Receptors that detect taste}& \text{3. Spinal cord and the Brain}\\ \text{(iv)Receptors that detect smell}& \text{4. Muscles and Glands}\\ \text{(v)Examples of receptor organs are}& \text{5. Gustatory}\\ \text{(vi)Examples of effector organs are}& \text{6. Spinal Cord}\\ \text{(vii)Peripheral Nervous System consists of}& \text{7. Spinal nerves from the spinal cord and}\\ & \text{cranial nerves from the brain}\end{array}$$

______________ factors are responsible for the maintenance of the resting membrane potential of a neuron.

If coronary circulation is removed from the human body, which of the following effects do you think it will have on the body?

When we smell and taste our favorite food, mouth starts watering involuntarily. What is the mechanism behind it?

Study the pedigree chart given below.

It shows that:

In the first chapter of the Biology 1st module of introduction it is said that the non living things can create the one living cell and after some explanation it is said that non living things cannot create any of the living thing. why?

Which of the following is a fossil?

___________ is a technique in which genetic constitution of an organism is altered by introducing new genes into its chromosomes.

Question 39
Match the terms of Column (A) with those of Column (B)

A blood vessel that starts and ends with a capillary is called _________

What is the role of platelets in the blood?

Functions of reflex arc?

Paramparagat Krishi Yojana (Traditional Farming Improvement Programme) aims at discouraging

Code:

Which of the following is an essential feature of the barter system?

Identify the plant with chlorophyll.

__ kills the germs that enter along with food.

Give any two significances of meiosis.

Can we say a monomer is same as a molecule ???

Reproductive health involves

Freshwater is obtained from__.

In the active transport, carrier proteins utilise energy in the form of ATP, to:

Which of the following contributes most to water transport from the ground to the leaves of a tall tree?

When a fertilised egg E formed in the oviduct of a human female divide repeatedly to form an embryo, the embryo gets implanted in the thick and soft lining of the uterus. After this, a disc-like special tissue T develops between the uterus wall and embryo through which all the requirements of the developing embryo (and foetus) are met from the mother's body. The embryo is connected to the tissue T through a string like structure S.
(a) What is the other name of fertilised egg cell E?
(b) What is the name of tissue T?
(c) Name the string-like structure S.
(d) Name two substances which pass from mother's blood to embryo through tissue T and, one type of substance which passes from embryo to mother's blood.
(e) What happens to S when the baby is born? Why?