The product of fermentation is _____.
Important Questions on Life Processes
Transpiration has been described as a 'necessary evil' because it is inevitable, but potentially harmful. Which of the following statements describe this?
(i) It causes absorption of mineral salts.
(ii) It regulates plant temperature.
(iii) It causes wilting and injury in plants
(iv) It causes ascent of sap.
Match the phytohormones in column I with role played by them in column II and select the correct option from the codes given below.
| Column I | Column II |
| (a) Auxin | (i) Cell division |
| (b Gibberellin | (ii) Induces seed dormancy |
| (c) Cytokinin | (iii) Cell enlargement |
| (d) ABA | (iv) Ripening of fruits |
| (e) Ethylene | (v) Breaking seed dormancy |
The given figure shows the pathway of a nerve impulse in a reflex action. Which part serves as a link between neurons?
Study the given experimental set-up.
By measuring the movement of the oil drop in the apparatus, what can be investigated?
Match column I with column II and select the correct option from the codes given below.
| Column - I | Column II | ||
| (a) | Calcitonin | (i) | Pancreas |
| (b) | Glucagon | (ii) | Ovaries |
| (c) | Progesterone | (iii) | Adrenal glands |
| (d) | Corticosteroid | (iv) | Thyroid gland |
| (e) | Prolactin | (v) | Pituitary |
| (vi) | Parathyroid gland |
Absorption of light energy by chlorophyll.
Conversion of light energy to chemical energy and splitting of carbon dioxide into carbohydrates and oxygen.
Reduction of carbon dioxide to carbohydrates.
Conversion of chemical energy to radiant energy and splitting of water molecules into hydrogen and oxygen.
