1 Principles of Inheritance and Variation
In the dihybrid cross the kinds of gametes produced by F1 hybrid are 1) YR,Yr, YR,yr 2) YY, yy, RR,rr 3) Yy, yr, yR,YR 4) YR,Yr, yR,yr
2
In Kidney's the amount of Potassium reabsorbed and amount of urea excreted in 24 hours is respectively - 1) 16.8g ; 5g 2) 21g ; 0.2 g 3) 27g ; 30g 4) 25g ; 2g
3
Ethylene gas1. is a saturated hydrocarbon2. slows ddown ripening of apples3. retards appartment ripening of tomatoes4. speeds up maturation of tomatoes
4
Haversian canals are found in1. Long bones of rabbit2. Simple sponges of aseon type3. Internal ears of mammals4. Spinal cord of vertebrates
5 Cell Cycle and Cell Division
In which of the following phases does the attached chiasmata get separated? 1) Metaphase I 2) Anaphase I 3) Telophase I 4) Cytokinesis I
SOLUTION
The chiasmata is the point where two homologus non-sister chromatids exchange genetic material during crossing over. It becomes visible at the diplotene stage of prophase I. It links homologous chromosomes together till anaphase I and gets separated.
6 Morphology of Flowering Plants
Which of the following is endogenous in origin 1) leaf 2) root 3) stem 4) bud
7 The Living World
Which of the following is correctly matched without exception in regard to plant classification?
1) Family - Poaceae - ae
2) Division - Pteridophyta - phyta
3) Class - Bryopsida - sida
4) Genus - Solanum - um
Answer
Family - Poaceae - ae
All plant families end with -ae suffix. However, it differs for division, class and genus.
8
Number of volumes in Genera Plantarum 1) Two 2) three 3) four 4) five
9 Digestion and Absorption
Milk protein is acted upon by a gastric enzyme 1. Caesin 2. Rennin 3. Pepsin 4. Caesinogen
10
The final electron acceptor during oxidative phosphorylation is: 1) oxygen 2) water 3) carbon dioxide 4) ATP
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