Biology
State the exact location of the following:
(i) Chloroplast
(ii) Incus
(iii) Corpus callosum
(iv) Guard cells
(v) Pulmonary semilunar valve
Answer
(i) Chloroplast are present in mesophyll cells located between the upper epidermis and the lower epidermis (i.e. in palisade cells and spongy cells) of leaves. They are also found in the guard cells of stomata and in the outer layers of young green stems.
(ii) Incus is located between Malleus and Stapes of ear ossicle which is found in the middle ear.
(iii) Corpus callosum is located between the two cerebral hemispheres.
(iv) Guard cells are located in Stomata.
(v) Pulmonary semilunar valves are located at the opening of the right ventricle into the pulmonary artery.
Related Questions
Name the following:
(i) The cell body of a nerve cell.
(ii) The waxy layer on the epidermis of the leaf meant to reduce transpiration.
(iii) A non-biodegradable pesticide.
(iv) The physical expression of genes in an individual.
(v) Knot-like mass of blood capillaries inside the bowman's capsule.
Given below are six sets with four terms each. In each set a term is an odd one and cannot be grouped in the same category to which the other three belong. Identify the odd one in each set and name the category to which the remaining three belong. The first one has been done as an example :
Example : Fructose, Sucrose, Glucose, Calcium.
Odd term: Calcium
Category: Carbohydrates(i) Carbonic acid, Acetic acid, benzoic acid, boric acid.
(ii) Saliva, bile, sweat, tears.
(iii) Cretinism, Myxedema, Simple goitre, Acromegaly.
(iv) Sneezing, coughing, blinking, typing.
(v) Semicircular canals, Cochlea, tympanum, utriculus.
Match the items in Column A with that which is most appropriate in Column B. Rewrite the matching pair.
Column A Column B (1) Testis (a) Kidney (2) Poliomyelitis (b) Water vapour (3) Transpiration (c) Prostate gland (4) Clotting of blood (d) Iron (5) Uriniferous tubule (e) Uterus (f) Gonad (g) Salk's vaccine (h) Water droplet (i) Calcium (j) TAB vaccine Choose the correct answer from the four options given below:
The cell component visible only during cell division:
- Mitochondria
- Chloroplast
- Chromosome
- Chromatin