Explore topic-wise InterviewSolutions in .

DIRECTIONS: Read the following statements carefully and choose the correct options.
Read the following statements Mark ‘O’ for Osmosis and ‘D’ for Diffusion & choose the correct option below:
A. Gases in roots are taken up and thrown by
B. Water is taken by plasma membrane
C. Water is expelled out of plasma membrane
D. Exchange of gases

Why is it necessary to separate oxygenated and deoxygenated blood in mammal and birds ? Give examples.

What are vestigial organs? Name two vestigial organs found in human body to explain vestigial organ. [3 MARKS]

The major cause of cancer is due to uncontrolled cell division which forms a cell mass called ___(i)___. This may occur due to failure in cell regulation. This cell mass reaches other organs through a multi-step process termed ___(ii)___ .

Early anaphase is characterized by the

Which of the following hormone is concerned chiefly with root iniation?

The network of tissues and organs that help in getting rid of toxins from body is ___

Match the following.

$\begin{array}{cc}\text{Diseases}& \text{Symptoms}\\ \text{A)}\text{Alzheimer's}& 1)\text{Loss}\text{of}\text{body}\text{balance}\\ \text{B)}\text{Parkinsons}& 2)\text{Loss}\text{of}\text{Memory}\\ \text{C)}\text{Epilepsy}& 3)\text{Froth}\text{from}\text{mouth}\end{array}$

Explain the structures and functions of a neuron

Name the structures that control the opening and closing of stomata.

Enter 2 words only.

Totipotency means

mention 2 steps in which glucose is broken down to release energy

What is a lymph

The cell wall in plant cells is mainly composed of ___

Blood group that doesn't have A or B antigens on RBCs is ___

Stalk of flower is known as .................

Match the following with repect to glands and disease

$$\begin{array}{cc}\text{A. Addison's disease}& \text{1. Pituitary}\\ \text{B. Tetany}& \text{2. Thyroid}\\ \text{C. Acromegaly}& \text{3. Adrenal cortex}\\ \text{D. Myxoedema}& \text{4. Parathyroid.}\end{array}$$

What is the Principle Factor of the Disease known as Thalessemia?

How many chromosomes pair are found in human?

Annelida are advanced over Nematoda in having

According to Darwin evolution is

Which of the following is the most important cause driving animals and plants to extinction?

Which of these following diseases are genetic disorders?

A) Haemophilia

B) Ebola

C) Tuberculosis

D) Sickle cell anaemia

E) Dengue fever

Define reflex action. Give one example. Show with the help of a flaw diagram the path of reflex action.

Rewrite the terms in the correct order so as to be in a logical sequence.

(a) Implantation, ovulation, child birth, gestation, fertilisation.

(b) Coitus, ovum, sperm, sperm duct, urethra, vagina.

(c) Sperm duct, penis, testes, sperms, semen.

(d) Puberty, menopause, menstruals, menarche, reproductive age.

(e) Graafian follicle, ostium, uterus, fallopian tube.

The figure shows the human excretory system with it's structures labeled A to D.

Select option which correctly identifies them and gives their characteristics and/or functions.

Differentiate between the following pairs of terms :

(a) Bowman's capsule and Malpighian capsule.

(b) Renal cortex and renal medulla.

(c) Renal pelvis and renal papilla.

(d) Urea and urine.

(e) Excretion and Catabolism.

Temporarily intoxicating ___ of plant origin may have the permanent damaging effect on the human nervous system.

The fluid-mosaic model was advocated by:

The neurotransmitter released into the synapse between neurons and muscle cells that stimulate skeletal muscle cell is

Identify the pre-human ancestor

(a) Ramapithecus

(b) Australopithecus

(c) Neanderthal man

(d) Cro-Magnon

Which of the following is/are a biofertilizer

In humans, somatic cells are ___ in nature whereas gametes are ___ in nature.

The disease 'rust of wheat' in plants is caused by___ .

State the changes that take place in the uterus when :

(a) Implantation of embryo has occurred
(b) Female gamete/egg is not fertilized.

Adrenaline is also called a stress managing glands of the body justify your answer

Question 8 (ix)
Given below is a square of letters in which are hidden different words related to respiration in organisms. These words may be present in any direction – upwards, downwards, or along the diagonals. Find the words for your respiratory system. Clues about those words are given below the square.

(ix) An organism with tracheal system

The term auxin was first coined by ________

Explain difference between stomata and lower epidermal

The movement of pollen tube of angiosperms and gymnosperms towards the female gametophyte is an example of _______ movement.

Malaria is caused by a ___ which is a protozoan.