Saturday, October 24, 2020

2018 SAY (June) | HSE +2 Exam | Botany Question Paper

2018 SAY (June) 

PART A: BOTANY

(Questions 1 to 3): Answer all the questions. Each question carries 1 Score.

1. Identity the freshwater fish from the following:

a. Sardine
b. Mackerel
c. Rohu
d. Hilsa

2. 'In Gel electrophoresis, the separated DNA fragments can be visualized after staining. Name the stain used for it.

3. In a forest ecosystem, different plant species are occupied in different vertical levels. Name such vertical arrangement.

(Questions 4 to 14): Answer any 9 questions. Each question carries 2 Scores. (9 x 18)

4. Primate and non-primate female mammals exhibit cyclic changes in the activities of ovaries and accessory ducts as well as hormones during the reproductive phase. Name the cyclic changes in these group.

5. Bamboo species and Strobilanthus kunthiana exhibit usual flowering phenomena. Explain their flowering characteristics.

6. A population has certain attributes that an individual organism does not. What are they?

7. Multiple copies of gene of interest can be synthesised in vitro. Name the technique and its requirements.

8. Catalytic converters are used in automobiles to control air pollution. Briefly comment on its role.

9. Your friend wishes to start a poultry farm. What are the important suggestions given to him for successful management of the farm?

10. Pollination by water is seen in Zostera and Vallisnaria. Enumerate its adaptations.

11. Parasites evolved special adaptations to live on host. What are they?

12. Domestic sewage and industrial effluents contain large amount of nutrients, What are the probable effects of these nutrients on water bodies?

13. Match the Column A with Column B. 

Column A

Column B

(a) Human Alpha lactalbumin

(1) ELISA

(b) Antigen Antibody Interaction

(2) ELI LILLY

(c) Genetically engineered Insulin

(3) CORN BORER

(d) Cry I Ab

(4) ROSIE

 

(5) BOLL WORM


14. Humification leads to accumulation of a dark coloured amorphous substance. Identity the substance and its peculiarities.

(Questions 15 to 18): Answer any 3 questions. Each question carries 3 Scores. (3 x 3 = 9)

15. Bt cotton is a transgenic pest resistant plant.

a. How this was achieved?
b. How does this plant survive on pest attack?

16. Depending on the source of pollen, pollination can be divided into three types. What are they? Explain each.

17. Hydrach succession take place in wetter areas and the successional series progress from 'hydric' to 'mesic' condition. List out the stages in correct sequence.

18. Restriction endonuclease enzymes are used to cut the DNA at specific sequence.

a. Write the name of first isolated one.
b. Write the convention for naming these enzymes.

👉  ANSWERS

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