Mention two adaptations in roots for absorption of water from the soil.

Deplasmolysis occurs when a plasmolysed cell is placed in: (a) Concentrated salt solution (b) Tap water (c) Concentrated sugar solution (d) Hypertonic salt solution

What is a semi permeable membrane? Name the semi permeable membrane present in a plant cell.

What is Active transport?

Arrange and rewrite the terms in each group in correct order to be in a logical sequence beginning with the term that is underlined: (a) Snake, Rabbit, Cabbage, Hawk. (b) Xylem, Soil water, Cortical cells, Root hair. (c) Receptor, Response, Effector, Spinal Cord. (d) Fovea, Lens, Cornea, Conjunctiva. (e) Testis, Urethra, Sperm duct, Epididymis.

Given below is the diagram of a plasmolysed cortical cell of a root. Copy the diagram and label the following parts: (a) Cytoplasm (b) Hypertonic solution (c) Plasma membrane

Given below is a picture of a tree. Mention the scientific phenomena occurring in the parts labelled (a), (b) and (c).

Name the following: (a) Unicellular outgrowths of the epidermis of roots. (b) The defect of the eye in which some parts of an object are focused while other parts appear blurred. (c) The tropic movement in response to chemicals. (d) The main nitrogenous waste in the human body. (e) The attachment of the fertilized ovum to the wall of the uterus.

Varun's mother added plenty of salt to the mango pickle she made. This is to: A. enhance the colour of the pickle. B. inhibit the growth of microorganisms. C. increase the nutritional value. D. create a hypertonic solution. (a) A and C (b) B and C (c) C and D (d) B and D

Assertion (A): A turgid plant cell is in a balanced state. Reason (R): In a turgid cell, turgor pressure and wall pressure are equal and in the same direction. (a) A is True and R is False (b) A is False and R is True (c) Both A and R are True (d) Both A and R are False

What is the structure of DNA as proposed by Watson and Crick?

A health organization wants to educate the rural audience about population control using visually engaging methods. Which of these would be effective? P. Posters Q. Loudspeakers R. Film shows S. Street plays (a) P, R and S (b) Q, R and S (c) P, Q and R (d) P, Q and S