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Endothermic organisms are

Question 36 (b)
Fill in the blanks
(b) Cell wall of fungi is made up of ____.

The difference between the birth rate and the death rate is known as

Give one example of plant part. [2 MARKS]
A. Which is positively hydrotropic as well as geotropic.
B. Which is positively phototropic but negatively geotropic.

Select the word which means the opposite of the word REFINED.

What is placenta? State its two role during pregnancy.

Identify the parts labelled in the given transverse section of anther.

Eyeball is controlled by:

Define the term translocation.

Which of the following organism reproduces by budding?

How is food pushed through the gut?explain

How is food pushed in the oesophagus? explain ?

What is the colour of deoxgenatd blood of human body

When we get a cut on our body , our blood vessels and WBCs are there to heal it then why do we put on a bandage from outside ?

Identify the incorrect statement(s) regarding the endocrine system.

Dramatic changes of body features associated with puberty are mainly because of the secretions of

Angina Pectoris is due to
(a) defective nutrition
(b) chest pain due to an inadequate supply of oxygen to the heart muscle
(c) defective functioning of the mitral valve
(d) infection by a virus

State the difference between the process of respiration an photosynthesis.

There are living cells.But we know that cell is the basic unit of life.The independent living cell are called unicellular organisms.Ex-Amoeba.There are independent living tissue also.Ex.Fungi. Similarly is there any independent living organ??

As we know the sequence

Organism- organ systems - organ - tissue - cell

When molecules move from the area of lower concentration to the area of higher concentration and energy is used, it is called

What substances enter into the food vacuole in Amoeba to break down the food

‘Regurgitated by the parent birds’ means

A biology student is performing PCR for the first time. She adds the right DNA fragments and its corresponding primers. She also adds DNA polymerase and free nucleotides. The reaction mixture is kept in a water bath that measures ${37}^{\circ }C$. But DNA amplification does not occur. Why?

Testosterone is produced in testes by

Assertion (A): A group of apes split into two smaller groups - one evolved into the modern gorillas, and the other into a chimpanzee - human ancestor.
Reason (R): Bipedal locomotion is advantageous because it frees forelimbs for more actions.

Which of the following statement is true for evaporation and transpiration process?

When light enters the human eye, it first reaches ___ , then ___ and finally it reaches the ___ .

What are astrocytes and their function in body?

Nervous and hormonal system together performs function of control and coordination in human being. Justify the statement.

Some green beetles appear among the red beetle because:

The economically valuable excretory product of coniferous trees is/are:

Mention whether the following statement is true (T) or False (F). Give reason in support of your answer.
(a) The cow was the first domesticated animal.
(b) Rapidly growing industries favoured population rise.
(c) Present human population growth is following the arithmetic progression.
(d) Birth rate (natality) is the number of live births per hundred people of population per decade.
(e) Tubectomy is a popular surgical method of contraception in human males.

Below mentioned pictures depict surgical contraception . Identify them ;

Which one chemical reaction occurs during photosynthesis ?

(a) Carbon dioxide is reduced and water is oxidised.

(b) Water is reduced and carbon dioxide is oxidised.

(c) Both carbon dioxide and water are oxidised.

(d) Both carbon dioxide and water are reduced.

How is the process of pollination different from fertilisation?

Four types of Venn diagrams are given below. Different sets of persons, things, etc. follow these diagrams. Choose the correct representation of the sets in the form of Venn diagram.

Q24. Vegetables, tomatoes, and brinjals.

चार प्रकार के वेन आरेख नीचे दिए गए हैं। व्यक्तियों, चीजों, आदि के विभिन्न सेट इन आरेखों का पालन करते हैं। वेन आरेख के रूप में सेट का सही प्रतिनिधित्व चुनें।

Q24. सब्जियां, टमाटर, और बैंगन।

answer the following questions briefly:-

1. what types of enzymes are secreted

2. why enzymes are called biocatalysts

3.what are enzymes

4. what is the role of stomach in digestion

5. what is role of HCl in stomach

6. what is the role of bile in digestion

7. What is the second largest land as well as organ in our body ?what is the product of this gland and what is its function in digestion?

In a plant, the red colour of the flower is dominant over white. A cross was made between a plant containing red flower and other with white flower. The cross yielded 50% white-flowered plant and 50% red flowered plant. The trait of the parent with the red flower has:

What is PCT?

Name the following :
(a) The photosensitive pigment present in the rods of the retina.
(b) The part which equalises the air pressure in the middle and external ear.
(c) The ear ossicle attached to the tympanum.
(d) The outermost covering layer of the brain.
(e) The tube which connects the cavity of the middle ear with the throat.
(f) The part of the eye responsible for its shape.
(g)The nerves which transmit the impulse from the ear to the brain.
(h) The photoreceptors found in the retina of the eye.
(i)The eye defect caused due to shortening of the eyeball from front to back.

In what ways is fertilisation in a plant :
(a) similar to fertilisation in a human?
(b) different from fertilisation in a human?