Read the given statements regarding a cell organelle. (i) It contains water, sap, excretory products and other unwanted materials. (ii) It is bounded by a single membrane called tonoplast. (iii) In plant cells, it can occupy upto 90 % of cellular volume. (iv) Its contents form cell sap. (v) It maintains turgor pressure. The above features are attributed to

Consider the following statement and select correct set for brown algae as well as red algae. (i) Certain marine forms produce large amonts of hydrocolloids. (ii) Used as food supplements by space travellers. (iii) Organisms may have unicellular and multicellular plant body. (iv) They have cellulose in cell wall and chlorophyll a pigment.

Name the following: (a) The process in plants which converts light energy into chemical energy. (b) Organisms that cannot prepare their own food. (c) Organisms that can prepare their own food (d) The cell organelle where photosynthesis occurs. (e) The cells which surround a stomatal pore (f) An enzyme secreted by gastric glands in stomach Which acts on proteins.

Which of the following statements is/are incorrect? (i) Water and minerals, and food are generally moved by a mass or bulk flow system. (ii) Bulk flow can be achieved either through a positive hydrostatic pressure gradient or a negative hydrostatic pressure gradient. (iii) The bulk movement of substances through the conducting tissues of plants is called translocation. (iv) Xylem translocates organic and inorganic solutes, mainly from roots to the aerial parts of the plants. (v) Phloem translocates water, mineral salts, some organic nitrogen and hormones, from the leaves to other parts of the plants.

A plant leaf is found to have bundle sheath cells having large-sized chloroplasts full of strach granules. Which of the following characteristics can be observed in this plant? I. Stomata open at night. II. Presence of PEP carboxylase in mesophylls. III. Presence of Rubis Co in bundle sheath cells. IV High photorespiration rate in hot summer days. V. Light reaction and carbon fixation as carbohydrates occur in different cell types. VI. The carbon assimilation rate is saturated in the early morning on summer days.

Match the lists {:(,"I",,"II"),((a),"Apices of underground branches store food ",(i),"Mentha"),((b),"Underground branches grow obliquely upward from the axillary buds of nodes of stem below the soil",(ii),"Hydrocotyle"),((c),"Aerial branches grow obliquely downwards and produce adventitious roots after touching the soil",(iii),"Agave"),((d),"Weak stemmed plants have a cluster of leaves and roots at every node",(iv),"Stachys"),(,"",(v),"Jasminum"):}