BABSc, B.Com & BCA Questions _III - Nalanda Open University
BABSc, B.Com & BCA Questions _III - Nalanda Open University
BABSc, B.Com & BCA Questions _III - Nalanda Open University
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5. What is air pollution? In what ways man is affected by air pollution.<br />
6. Write short notes on the following:<br />
(a) Green house effect<br />
(b) Ozone depletion<br />
7. Write short notes on any three:<br />
(a) Cause of air pollution (b) Automobile pollution<br />
(c) Effect of soil pollution (d) source of water pollution (e)<br />
Halophytes.<br />
8. Explain the ecological adaptation in xerophytes.<br />
9. Explain Ecological pyramids.<br />
10. Write short notes on any three of the following:<br />
(a) Automobile pollution (b) Effect of soil pollution<br />
(c) Shifting cultivation<br />
(d) Source of water pollution` (e) Nitrification.<br />
<br />
<strong>Nalanda</strong> <strong>Open</strong> <strong>University</strong><br />
Annual Exam-2010,<br />
Bachelor of Science (Botany) Hons, Part-<strong>III</strong><br />
Paper-VII<br />
Time: 3Hrs Full Marks: 75<br />
Answer any five questions. Question no. 1 is compulsory.<br />
All questions are of equal marks.<br />
1. Multiple Choice <strong>Questions</strong>:<br />
(xxxi) The activities of living cells are controlled by<br />
(a) Chloroplast (b) Tonoplast (c) Nucleus (d)<br />
Auxins<br />
(xxxii) Nucleus was first identified by<br />
(a) Robert Hooke (b) Robert Brown (c) Altman (d)<br />
Sanger<br />
(xxxiii) Enucleated living plant cell is<br />
(a) Sleve tube (b) Vessel (c) Tracheids (d) None<br />
(xxxiv) Nucleous was discovered by<br />
(a) Fontance (b) Altman<br />
(c) Crick (d) Nirenberg<br />
(xxxv) Nuclear membrane disappears during mitosis at<br />
(a) Anaphase (b) Late Prophase (c) Telophase (d)<br />
Metaphase<br />
(xxxvi) Chromosomes other than autosomes of a cell are<br />
(a) Sex chromosome (b) Polytene chromosomes<br />
(c) Episomes (d) Giant chromosomes<br />
(xxxvii) The number of chromosomes in garden pea is<br />
(a) Seven (b) Seven pairs<br />
(c) Ten (d) Twelve pairs<br />
(xxxviii) Polytene chromosomes are attached at a point called<br />
(a) Centriole (b) Chromocentre (c) Chromatid (d) Mitotic<br />
metaphase<br />
(xxxix) Chromosome are concerned with<br />
(a) Respiration (b) Growth<br />
(c) Assimilation<br />
(d) Transmission of Hereditary<br />
characters.<br />
(xl)<br />
Lampbrush chromosomes are found in<br />
(a) Nerve cells of cats (b) Germ cells of mammals<br />
(c) Ovarian cells of amphibia (d) Salivary glands of Diptera<br />
(xli) An octamer of four histones complexed with DNA is called<br />
(a) Endosome (b) Centrosome (c) Nucleosome (d)<br />
chromomere
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