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Senescence of leaves can be delayed by the use of:

In mammals, the urinary bladder opens into :-

The site of fertilisation in humans is

Difference between estrogen and progesterone

The human hindbrain comprises three parts one of which is

Which of the following is the respiratory pigment present in the stroma of an RBC?

Amoeba does not require any respiratory pigment to transport oxygen. Choose the correct option.

External genitalia in a female.

The reverse of plasmolysis is

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Please help me with the following

What is suction force in plants and how does transpiration help to produce it?

Which among the following has closed circulatory system?

Construction of which of the following contribute to deforestion?

Why Neanderthal man and modern man belong to two distinct species?

Name the six ancestral forms in their correct sequence through which modern man has evolved.

Statistical study of human population.

Enter 1 word only.

What happens during menopause?
A. No menstruation.
B. No maturation of new follicles.
C. The ovaries stop the secretion of estrogen

(a) What does a Mimosa pudica plant do in response to touch? What is this phenomenon known as?

(b) What happens to the dandelion flower

(i) during daytime

(ii) at night?

What is this phenomenon known as?

Explain the role of the following in the functioning of our body elaborately :-

Hypothalamus

Pons

Thalamus

Pituitary gland

Pineal gland

Where did life originate on the earth?

Name two animals having homologous organs and two having analogous organs. Name these organs.

Name (i) largest artery, and (ii) largest vein in our body.

The target was to convert SAPTA into SAFTA by:

A pregnant woman has an equal chance of her baby being blood group A or blood group AB. Which one of the following shows the possible genotypes of the woman and the father of her child ?

(a) $I^A{I}^{A}and{I}^B{I}^O$ (b) $I^A{I}^{B}and{I}^B{I}^O$ (c) $I^A{I}^{O}and{I}^B{I}^O$ (d) $I^A{I}^{B}and{I}^A{I}^O$

Female reproductive cycle might get disrupted by ___

How can schools reduce the amount of waste they generate?

The correct sequence of urine formation in human body is:

What is the relationship between blood and plasma

What are the interrelated processes of urine formation?

Untreated human excreta is a health hazard. Explain how?

In a human, how many chromosomes are present in :

(a) a brain cell ?

(b) a sperm in the testes ?

(c) an egg which has just been produced by the ovary ?

(d) a skin cell ?

(e) a fertilised egg ?

What is the total world population at present?

Diabetes mellitus is caused due to _________

Lymph can turn into blood tissue if it has_______.

What is the average wind speed required for the efficient harnessing of wind energy?

Find ‘p’ so thatp+3,4p-5,3p-1 are in A.P.

New cells are produced through mitosis for

Which among the following is the smallest part of brain?

had a cranial capacity of 1500cc.

Question 44
Answer the following :

(a) Name the endocrine gland associated with the brain?
(b) Which gland secretes digestive enzymes as well as hormones?
(c) Name the endocrine gland associated with kidneys?
(d) Which endocrine gland is present in males but not in females?

In the leaves of strawberry, [shown in picture below] what causes the water droplets formation at the edge of leaf in the absence of dew in atmosphere?

Assisted reproductive technology helps in overcoming ______.