EAMCET Model Questions From Botany

1. Find degenerate sets of codons from the following
I. UAA, UAG, UGA II. AUC, ACU, AUG, AUU III. UCU, AGU, UCG IV. AUG, UUU, GGG, UCU V. UCC, UCA, AGC

1) I, IV 2) III, V 3) I, V 4) II, V

2. Total number of energetic, electron pairs which are generated from Glycolysis and Krebs cycle for a Glucose molecule in aerobic respiration
1) 24 2) 12 3) 8 4) 10

3. The enzyme present in every prokaryote is
1) Aldolase 2) Dinitrogenase
3) Nitrate reductase 4) ATP synthase

4. Antisense strand of DNA measuring 1009.8Ao is transcribed. m-RNA that left the nucleus could carry a message for producing a protein with 90 peptide bonds. So how many triplets nucleotides are cut from m-RNA during sizing.
1) 8 2) 6 3) 7 4) 9

5. 29 t-RNAs brought their specific amino acids to the same site on ribosome one after the other. So how many peptide bonds are present in the protein and find out the length of m-RNA carrying message for it.
1) 29, 316.2Ao 2) 30,306.2Ao 3) 28, 306.2Ao 4) 28,316.2Ao

6. Number of H+ accumulated in the inter membrane space of mitochondria from all the reduced coenzymes in Electron Transport System during quinone cycles for a glucose in aerobic respiration.
1) 56 2) 80 3) 48 4) 104

7. A set of enzymes namely Epimerase (K), his phosphotase (L), Isomerase (M) and kinase (N) are choosen from the enzymes participating in, calvin cycle. Find out their suitable substrates in ascending order from the following
C. Fructose - 1, 6 - bisphosphate
D. Xilulose - 5 - phosphate
E. 3 - phosphoglyceric acid
F. Glyceraldehyde - 3 - phosphate

1) LF, KC, ND, ME 2) NE, LC, MF, KD 3) MF, KE, NC, LD 4) NC, KF, MD, LE

8. Vinegar is obtained from
1) Clostridium 2) Acetobacter
3) E. coli 4) Lactobacillus

9. Arrange the following factors of photosynthesis in ascending order basing on their necessity.
A. CO2 B. H2O C. Sunlight D. RuBP E. Chlorophyll F. NADP
1) E C B F A D 2) C E B F A D 3) A C E D F B 4) E B C F D A

10. The major electron carrier in reductive photosynthesis
1) Plastosemiquinone 2) Plastocyanin 3) NADP 4) Cytb - Cytf Complex

11. A protein that acts on other protein
1) Complex I 2) Amylase 3) Aldolase 4) Pepsin

12. The hormone that changes the direction of the growth of stem is
1) Ethylene 2) Gibberellins 3) Cytokinins 4) ABA ABA

13. Molybdenum, a micro element is a part of the following and help in Nitrogen uptake and Nitrogen fixation
1) Nitrate reductase 2) Dinitrogenase 3) 1 and 2 4) Dinitrogenase Catalase

14. Water absorbed by the root hair, moves through cortical cells and finally enters into Xylem through
1) Apoplast movement 2) Symplast movements 3) 1 and 2 4) Vacuolar Pathway

15. The rhamboidal structures in Cycas are
1) Scale leaves, Microsporophylls 2) Leafbases, Megasporophylls
3) Microsporophylls, Leafbases 4) Microsporophylls, Megasporophylls

16. Pickout incorrect statement from the following

1) Though all arechegonia in Pteris prothallus are fertilised, only one embryo develops from one prothallus
2) Microsporophylls of Cycas and prothallus of Pteris produce their respective reproductive structures on the same side.
3) Rhizopus do not produces Zygote in its life cycle.
4) Half of the peristomial teeth in Funaria show lignin thickenings

17. Gametophore in Funaria is formed earliest from the following
1) Tubers 2) Protonema
3) Gemmae 4) Secondary Protonema

18. Mitosis is seen through out the life cycle of Spirogyra if it do not forms
1) Akinetes 2) Aplanospore 3) Zygospore 4) Akinete, Aplanospore, fragmentation

19. Anton van Leeuwenhock developed simple microscope that could magnify the objects upto how many times
1) 100 2) 200 3) 300 4) 1000

KEY: 1)2 2)4 3)1 4)3 5)1 6)3 7)2 8)2 9)1 10)3 11)4 12)1 13)3 14)3 15)2 16)1 17)3 18)3 19)3

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