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The term used to express details of appearance or behaviour is:

Lungs excrete carbon dioxide as a result of

Explain double circulation .

Multiple fission occurs in one of the following. That is:
(a) bread mould
(b) kala-azar parasite
(c) flatworm
(d) malaria parasite

Consider the leaf of a plant shown in the figure below:

After destarching the plant, it was partially covered with a lightproof paper (as shown in the figure above), and the entire plant kept in the sunlight for 3-4 hours. After this, the starch test was carried out on the leaf. Which of the following would the leaf appear like at the end of the starch test?

In the pictorial table shown below, F-2 generation genotypes are shown whose parents are RrYy genotypes .( Round Yellow ). The new combination of F2 generation is the result of

The normal body cell of an organism contains 28 pairs of chromosomes. The number of chromosomes present in its germ cell will be :
(a) 28
(b) 14
(c) 56
(d) 42

Write down the functional activity of the following parts,

(a) Glomerulus

(b) Henle's loop

(c) Ureter

(d) Renal artery

(e) Urethra

Write True (T) or false (F) for the following:
(a) Vasectomy is the surgical method of sterilisation in human males.
(b) Tubectomy is the placing of a diaphragm on the cervix.

Haemodialysis is associated with

Lymph is also known as

Losing a lot of blood through even minor wounds are characteristics of a particular disease called _______ .

What substance/substances are transported in plants by :
(a) xylem vessels and tracheids ?
(b) sieve tubes (or phloem) ?

Which one of the following individuals can produce sixteen different gametes?

An organism A which cannot move from one place to another, makes a simple food B from the substances C and D available in the environment. This food is made in the presence of a green coloured substance E present in organs F in the presence of light energy in a process called G. Some of the simple food B also gets converted into a complex food H for storage purposes. The food H gives a blue-black colour with dilute iodine solution.
(a) What is (i) organism A (ii) food B, and (iii) food H?
(b) What are C and D?
(c) Name (i) green coloured substance E, and (ii) organ F.
(d) What is the process G?

Described below are the three steps in the process of how eutrophication leads to total destruction of aquatic life. Choose the option which has the correct sequence of these steps.
i) Algae die off, hence a large amount of organic matter gets released.
ii) Bacteria begin degrading organic matter, leading to a decrease in dissolved oxygen.
iii) Increase in nutrient concentrations causes a sudden growth spurt in algae.

The glomerular filtration rate in a normal adult is nearly_______

Note the relationship between the first two words and suggest the suitable word / words for the fourth place.

(a) Stimulus : Receptor :: Impulse : ..............

(b) Cerebrum : Diencephalon :: Cerebellum : ................

(c) Receptor : Sensory nerve :: Motor nerve :...............

Which of the following hormones is not secreted by human placenta?

Sample paper of life processes

The amount of urine output per day by a normal human being is

Ducts of ___ gland join the urethra before opening into the penis.

Question 05
Prepare a table having two columns depicting names of endocrine glands and hormones secreted by them.

Which of the following is not an artificial method of vegetative propagation?

The amount of oxygen required by bacteria to break down the organic matter present in a certain volume of a sample of water is called:

Choose the correct option with respect to the assertion and reason given.

Assertion [A]: Uterus of multiparous women are slightly larger than those of nulliparous women.

Reason [R]: The uterine walls are highly elastic as the uterus accommodates the growing foetus.

Where are the lenticels present in a plant?

Evolution is defined as the:

What is an ovule?

Structure in the ear responsible for maintaining equal pressure on both sides of the eardrum.

Complete the following statements by choosing the correct alternative from the choices given in brackets :

(a) The dorsal root ganglion of the spinal cord contains cell bodies of (motor/sensory/intermediate) neurons.

(b) The cerebellum is the part of the brain which is responsible for

(i) conducting reflexes in the body

(ii) maintaining posture and equilibrium

(iii) controlling thinking, memory & reasoning.

(c) Reflex action is controlled by

(i) brain (ii) spinal cord

(iii) autonomic (iv) peripheral nervous system.

From biological point of view, an Indian school boy is more closely related to

Which of the following ear ossicle is attached to the tympanum?

The wave of expansion of an artery when blood Is forced into it is called :
(a) flow
(b) heart beat
(c) pulse
(d) ticking

A two-layered sac surrounding the heart is called:

What do you mean by :-

Testis and ovaries and calcitonin and thyroxine and uterus and the last is cow persgland

Temporarily intoxicating drugs of plant origin

A micronutrient causes toxicity when:

If the sequence of bases in DNA is ATTCGATG then the sequence of bases in its transcript will be

Hormones are essentially proteins, steroids, peptides and __________ .