I. In birds bone marrow is filled with air-sacs.
II. Air-sacs in birds helps in respiration as well as in body temperature regulation.
Which of the statements given above is/are correct?"
(a) Only I
(b) Only II
(c) Both I and II
(d) Neither I nor III
322 Q) "Consider the following statements
I. Chloroplast is known as cell within cell organelle.
II. Chloroplast is the largest cell organelle found in plant cells.
III. Chloroplasts have single stranded extra-chromosomal DNA.
Which of the statements given above is/are correct?"
(a) All of these
(b) I and II
(c) I and III
(d) Only III
(a) Morphological isolation
(b) Ethological isolation
(c) Reproductive isolatio
(d) Geographical isolation
324 Q) Which of the following cell organelle is mainly concerned with detoxification of drugs one takes during illness?
(a) Smooth ER
(b) Rough ER
(c) Mitochondria
(d) Lysosomes
325 Q) "Consider the following statements
I. Sphenodon, a living fossil is found in New Zealand.
II. Heloderma is a only poisonous lizard found in Nearctic region.
III. Phrynosoma, a homed toad is found in Australian region.
Which of the statements given above Is/are correct?"
(a)I and II
(b) II and III
(c) I and III
(d) All of these
326 Q) "Consider the following statements
I. Frogs can breathe by lungs as well as skin.
II. Gills are present in certain stages of lifespan of Frogs.
Which of the statements given above is/are correct?"
(a) Only I
(b) Only II
(c) Both 1 and II
(d) Neither I nor III
327 Q) The ultimate cause of water movement in a plant stem against gravity is
(a) osmosis
(b) transpiration
(c) photosynthesis
(d) diffusion
328 Q) The genes which confer antibiotic resistance to bacteria are located in
(a) plasmid
(b) nucleoid DNA
(c) RNA
(d) cell wall
329 Q) "Select the correct answer
I. Galactose
II. Mannose
III. Lactose
Which of the sugar(s) given above has/have make the mucilage found in some fruits like ‘Bhindi’?"
(a) Only I
(b) I and II
(c) II and III
(d) Only III
330 Q) Which among the following hormones is known as the Emergency hormone”?
(a) Thyroxine
(b) Oxytocin
(c) Vasopressin
(d) Adrenalin
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