NEET 2017 - Botany

AP EAMCET 2016 Question

1. Select the correct statements.
A) H1 histone molecule lies inside the nucleosome core and seals the two turns of DNA
B) Acrocentric chromosome has one extremely short and one very long arm
C) The association between positively charged DNA and negatively charged histones allows
for meaningful DNA packaging inside the nucleus.
D) A few chromosomes have nonstaining secondary constrictions at a constant location and gives the appearance of a small fragment called satellite.
1) A, C
2) B, C
3) B, D
4) C, D

2. Assertion (A): Eukaryotic cell shows extensive compartmentalization of cytoplasm.
Reason (R): Presence of membrane bound organelles is an important character in prokaryotes.
1) Both (A) and (R) are true and (R) is the correct explanation of (A)
2) Both (A) and (R) are true and (R) is not the correct explanation of (A)
3) (A) is true but (R) is false
4) (A) is false but (R) is true

3. Arrange the following compounds in descending order on the basis of number of carbon atoms present in them.
A) Palmitic acid
B) Serine
C) Ribose
D) Arachidonic acid
E) Glucose
1) D C A B E
2) B C E A D
3) D A E C B
4) C B A D E

4. Arrange the following in descending order.
A) Number of bivalents formed during meiosis of a spore mother cell of Ophioglossum.
B) Number of chromatids seen on equatorial at metaphase I in pollen mother cell of Haplopappus
gracilis during meiosis.
C) Number of chromosomes found at one pole after anaphase II during meiosis in butterfly
D) The total number of chromosomes in all daughter cells formed during meiosis from one megaspore mother cell in potato
1) B D C A
2) A C D B
3) A D C B
4) D C B A

5. Which cell organelle is involved in the breakdown of fatty acids?

1) Golgi apparatus

2) Vacuole

3) Peroxysome

4) ER

6. Identify the correct pair of statements.

I) Collagen is a heteropolymer

II) Cellulose possess complex helices in its structure.

III) Phosphodiester bond is present in triglyceride

IV) The triplet codon for the aminoacid having CH2-OH as 'R' group is AGU

1) I, IV

2) II, IV

3) I, III

4) II, III

7. The chromosome number of a megaspore of a plant 'A' and an endosperm cell od plant 'B' together equals to the chromosome number in the endosperm cell of maize plant. Plant 'A' and plant 'B' respectively are:

1) Rice, Haplopappus

2) Potato, Haplopappus

3) Potato, Apple

4) Onion, Rice

8. The correct sequence of the events that take place during meiotic division:

I) Crossing-Over

II) Appearance of recombinant nodules

III) Terminalisation of chiasmata

IV) Synaptonemal complex formation

1) II, III, IV, I

2) IV, II, I, III

3) I, III, II, IV