Explore topic-wise InterviewSolutions in .

Statement 1: Deafness is caused due to rupturing of the pinna.

Statement 2: Ciliary muscles regulate the size of the pupil.

Is there any villi in large intestine to absorb water as in small intestine for the absorption of food ?

What is the polarbody formed during double fertilization in plants?

write differences between aerobic and anaerobic respiration.

Any change in the environment, to which an organism responds is called ____.

Explain transportation of water in plants.

Genetics is the branch of science which deals with the study of_______.

The condition in which excess glucose passes with urine is ___.

(a) What is the difference between the two asexual methods of reproduction : fission and fragmentation?
(b) Name one organism which reproduces by fission and another which reproduces by fragmentation.
(c) What is meant by multiple fission? Name one organism which reproduces by the process of multiple fission.
(d) Describe the process of reproduction in Hydra with the help of labelled diagrams. What is the name of this process of reproduction?
(e) Name one unicellular organism which reproduces by the same asexual process as Hydra.

Colour blindness is due to a defect in

In which part of the digestive system is water absorbed ?

(a) Name the respective part of human female reproductive system:
(i) that produces eggs,
(ii) Where fusion of eggs and sperm takes place, and
(iii) Where zygote gets implanted.
(b) Describe in brief what happens to the zygote after it gets implanted.

Once mitosis is complete, the cells go through a phase in which the cytoplasm in the cells increases. What is this phase called?

The diagram below shows two test-tubes A and B. Test-tube A contains a green water plant. Test-tube B contains both a green water plant and a snail. Both Test-tubes are kept in sunlight. Answer the questions that follow :

(a) Name the physiological process that releases the bubbles of oxygen.

(b) Explain the physiological process as mentioned above in Q.2(a) (i).

(c) What is the purpose of keeping a snail in test-tube 'B' ?

(d) Why does test-tube 'B' have more bubbles of oxygen ?

(e) Give an example of a water plant that can be used in the above experiment.

(f) Write the overall chemical equation for the above process.

Do you agree with the statement - "All hormones are chemical signals" ? Yes/No. Justify your answer.

Alleles for a trait occurs singly in gametes are restored in F1 generation by ……………

A number of metabolic processes are interwoven by:

Which of the following statements about a prokaryotic cell is incorrect?

Choose the correct option regarding the structure of chloroplast based on the statments given.

Statement 1: The fluid part of the chloroplast is the stroma lamellae.

Statement 2: The membranous sacs arranged one above the other form the grana.

Statement 3: The membrane bound structures joining the grana are the stroma.

In which of the following economies are people more of a resource?

According to Neo-Darwinism natural selection operates through

At the time of entering into ovule, pollen tube has

Do the byproducts of wastewater treatment plants have any commercial value? [2 MARKS]

Hormones are transported from the place of origin to the target cells through the ______.

How many chambers does the human heart contain and what are they?

In order to make water safe for drinking, it should be __.

Give four distinct function of testis.

Why is smell important our sense of flavour.?

What is meant by cell sap ?

The ______clones are developed by nuclear transfer into the host cell.

Describe cohesive force theory.

Uterus prepares itself every month to receive a ___by making its ___ thick.

In Delhi, screens are put up across the city showing PM 2.5 levels as being dangerous. Particulate Matter (PM) are small dust and soot particles that come out from car exhausts. These particles are only 0.0025 millimeters thick which is thinner than the human hair!

Why do you think these particles are dangerous to our body?

The rupture and fractionation do not usually occur in the water column in vessel/tracheids during the ascent of sap because of

Which of the following is not a characteristic of alveoli?

Which of the following elements is required by the thyroid gland to make thyroxine hormone?

Question 47
In the given figure below, label the parts and mention their functions.
1. Production of egg
2. Site of fertilization
3. Site of implantation
4. Entry of the sperms

Out of alpha (α), beta (β) and gamma (γ) radiations: the radiations are negatively charged are

Which product is initially formed during photosynthesis?

Explain why, plants have low energy needs as compared to animals.

Pure -red tall pea plants are first crossed with pure -bred dwarf pea plants. The pea plants obtained in $F_1$ generation are then cross- bred to produce $F_2$ generation of pea plants.

(a) What do the plants of $F_1$ generation look like ?

(b) What is the ratio of tall plants to dwarf plant in $F_2$ generation ?

(c) Which type of plants were missing in $F_1$ generartion but reappeared in $F_2$ generation ?

A gradual change, over a long period, in a form of life is known as :
(a) erosion
(b) evolution
(c) revolution
(d) evaluation

AIDS can be prevented by

Identify the correct statement from the following.