Explore topic-wise InterviewSolutions in .

The ascent of xylem sap depends on _______.

The figure given below shows the human male reproductive organs. Which structures make sperms and seminal fluid?
(a) V makes sperms and X makes seminal fluid
(b) W makes sperms and Y makes seminal fluid
(c) X makes sperms and W makes seminal fluid
(d) Y makes sperms and V makes seminal fluid

What are tropic movements ? Briefly explain various types of tropic movements in plants.

Which one of the following statements pertaining to a plant structure is correct?

Mendel first crossed pure-bred pea plants having round -yellow seeds with pure-bred pea plants having wrinkled -green seeds and found that only round- yellow seeds were produced in the $F_1$ generation. When $F_1$ generation pea plants having round-yellow seeds were cross-bred by self-pollination, then peas having round-yellow seeds, round green seeds, wrinkled-yellow seeds and wrinkled -green seeds were produced. Mendel collected a total of 2160 seeds.

(a) What will be the number of (i) round green seeds (ii) wrinkled green seeds (iii) round yellow seeds, and (iv) wrinkled-yellow seeds?

(b) Which 'ratio' as established by Mendel have you made use of in answering the part (a) above?

Sago of Cycas is given to patients with stomach disorders because it is

The factors on which the rate of emission depends are

A potted plant was kept in the dark room for 48 hours prior to an experiment on photosynthesis. The purpose of keeping the plant in dark room is:

The build-up of lactic acid in muscles can lead to:

Glucagon is secreted by___ cells of pancreas.

The impulse of heart beat originates from ___

Mendel selected the pea plant for his experiments because:

The site for the maturation of T-lymphocytes is the___.

(a) What is meant by nastic movements in plants ? Give one example of nastic movements in plants.

(b) What is the difference between photonasty and thigmonasty ?

Which of the following is/are the characteristic feature of guttation?

Which of the following does not act as an endocrine gland as well as an exocrine gland ?

(a) testis

(b) ovary

(c) pituitary

(d) pancreas

Question 4
Give a brief description of the process of synthesis of food in green plants.

What are the advantages of having a nervous system?

Cells with a well-defined nucleus are called______a_____and cells without a well-defined nucleus are called_____b_____.

Alleles of a gene are found in________.

Which one is applicable to insect pollinated flowers?

Why does a banana get roasted if it does not have any seed ?

Diabetes mellitus is caused due to _____.

Which one develops from endoderm?

What is transportation

What language was used by Carolus Linnaeus while naming organisms?

What was Rinderpest?

The (i)___, controls both the heart rate and the stroke volume. There are two separate nerves from the cardiovascular centre to the sinoatrial node: the (ii)___, to speed up the heart rate and the (iii)___, to slow it down. (i) receives information from special cells called (iv)___, present in the aortic arch and in the carotid sinus.

Give the functions of adrenaline in points. (6marks)

Blinking of eyes is an

What are the connecting substances between light and dark reaction

Why when we cut onion tear come from our eye and when we cut onion chewing chemgun tear do not come from our eye

Marine fish when placed in tap water burst and die because of

What do we observe when the egg along with follicle becomes larger and gets filled with a fluid?

In human beings, sex of an individual is determined ___.

In the absence of moisture, seeds will dry up. What will happen to the rate of respiration?

Write a case study on dholes.

Which part of the brainstem connects the hindbrain and the forebrain?

Pollen grains are produced by

A mixture of radioactive substances gives off three types of radiations. The radiation which travels with the speed of light is

________ type of cell division reduces chromosome number to half in sex cells.

Two copies of an abnormal gene must be present in order for the disease or trait to develop in