EAMCET Botany Model Questions from Cell Biology and Plants

1. Arrange the following which are not applicable but related to Virus, Dujardin, Robert Brown and Virchow respectively.
A) Nucleoid B) Structural Unit of Organisms C) Cell Theory D) Active Centre for various biological processes.

2. Many cells function properly and divide mitotically meiotically even though they do not have the following
A) Cytoskeleton B) Mitochondria C) Plasma membrane D) Plasmids

3. Arrange the following in ascending order basing on their measurements (width)
A) Solenoid B) DNA C) Chromatid D) Nucleosome

4. Chromosomes of Eukaryotic Organisms showing sexual reproduction obtain maximum stability in the following of mitosis.
1) Prophase 2) Metaphase 3) Anaphase 4) Telophase

5. Phospho diester bond in the poly nucleotide chain of DNA or RNA of Eukaryotic or Prokaryotic Organisms is present between
1) Carbon of the Pentose sugar and Oxygen atom of Phosphate
2) Oxygen of Pentose sugar and Phosphorous of Phosphate
3) Carbon of the Pentose sugar and Nitrogen of Purine
4) Oxygen molecule of Phosphate and carbon of Pentose sugar

6. Assertion (A): DNA is also called chemical basis of heredity.
Reason (R): Hershy and Chase showed that DNA is the sole carrier of genetic information from parent to offspring.
1) (A) and (R) are correct. (R) explains (A)
2) (A) and (R) are correct. (R) do not explains (A).
3) (A) is correct. (R) is false.
4) (A) is false. (R) is correct.

7. Assertion (A): Chromosomes do not bend in the region of secondary contriction during anaphase.
Reason(R): Spindle fibres bind with secondary constriction and do not allow it to bend.
1) (A) and (R) are correct. (R) explains (A)
2) (A) and (R) are correct. (R) do not explains (A).
3) (A) is correct. (R) is false.
4) (A) is false. (R) is correct.

8. Select a wrong statement from the following.
1) The repeating units of organic polymers of nucleic acids are called nucleotides.
2) Maximum number of nucleotides in shortliving RNA may be more than 2000.
3) Chloroplast consists DNA and RNA.
4) Terminalisation starts in Diplonema

9. One of the following is not a soft fibre
1) Musa 2) Ramie 3) Linum 4) Hemp

10. Select a mis-match from the following pairs.
1) Sieve plate - Biconvex 2) Companion cells - Rectangular
3) Phloem fibres - Spindle shaped 4) Xylem parenchyma - Round or Oval Cells

11. The growth of the flowers and fruits after initiated at the apex of the stem occurs due to
1) Apical meristems 2) Lateral meristems
3) Intercalary meristems 4) Parenchyma

12. The following do not shows lignosuberised thicknings.
I. Monocot stem II. Dicot stem III. Dicot leaf IV. Monocot leaf
1) I, III 2) II, IV 3) I, II 4) III, IV

13. One of the following protects the dicot stem from desiccation
1) Cuticle 2) Hairs 3) Stomata 4) Thickwall

14. The vascular tissue in the bark is
1) Xylem 2) Xylem & Phloem 3) Phloem 4) Bast

15. The cells of the following tissue show coenocytic condition
1) Glands 2) Laticiferous tissue 3) Osmophores 4) Collenchyma

KEY: 1)2 2)4 3)2 4)2 5)1 6)1 7)3 8)4 9)1 10)4 11)3 12)1 13)1 14)4 15)2.

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