List of top Botany Questions

The reason for the genetic variation in the population of organisms

Assertion (A): There is no variation in size of mature seeds in orchids.
Reason (R): Lodoicea maldivica is the plant with largest seed.

Yeast poison themselves to death, because

The number of absorbed CO$_2$ and water molecules to produce 180 g of glucose in plants are:

The correct combinations among the following:

Scientist	Event / Contribution
I. Miescher	Named nuclein
II. Fisher	Discovered purines
III. Altman	Isolated nucleic acids
IV. Franklin	DNA X-ray diffraction

Amphitrichous bacteria contain flagella like this:

Primary CO$_2$ acceptor in C$_4$ plants

Water potential is equal to solute potential in the following

Fusion between two similar gametes, two dissimilar gametes, and non-motile and motile gametes occurs in these organisms respectively.

Name and arrange the following in the order of technique and steps for separation and isolation of DNA fragments:
[I.] DNA fragments moved towards anode under electric field
[II.] Exposure to UV radiation
[III.] DNA fragments stained with EtBr (Ethidium Bromide)
[IV.] Gel electrophoresis
[V.] Elution

Father of Bacteriology and link to infectious diseases

Assertion (A): Super weeds are fast growing than crops and resistant to weedicides.
Reason (R): There is transfer of new genes into related wild species through natural out crossing.

Cryopreservation is done at a temperature of:

Haem group associated with the enzyme catalase is an example of

A specific organism [A] showing the lack of cell wall, survive without oxygen, pleomorphic. The other organism [B] has cell wall embedded with silica and indestructible. A and B respectively belong to

Name the cells of mature pollen grain when you observe under microscope with the following characters respectively,
A) Bigger cell with abundant food reserve and large irregular shaped nucleus.
B) Small, dense cytoplasm with nucleus.

A person suffering from Iodine deficiency may be recommended to take extracts of this plant preparation.

Name the Mendel’s factors and pair of contrasting traits

Assertion (A): Vernalization is seen in Biennials
Reason (R): Cold treatment stimulates photo-periodic flowering response in cabbage.

List I List II List III

List I	List II	List III
(a) Witches Broom	(III) Mycoplasma	(i) Prokaryote
(b) Sleeping Sickness	(I) Trypanosome	(iii) Protozoa
(c) Early Blight	(IV) Alternaria	(ii) Fungi
(d) Scrapie	(II) Sheep	(iv) Virus

Choose the correct statements:
[A.] Asexual reproduction preserves genetic information.
[B.] Hybridization leads to multiply desirable genes.
[C.] Restriction enzyme adds methyl group to DNA.
[D.] Genetic engineering changes the phenotype of the organism.

Name the cell organelle which are involved in the following processes
A. Conversion of stored lipids to carbohydrates
B. Catabolism of long chain fatty acids

Match the following:

List I (Organism/Enzyme)	List II (Product/Use)
I. Aspergillus niger	D. Citric acid
II. Clostridium butylicum	C. Butyric acid
III. Lipase	A. Detergent formulation
IV. Saccharomyces	B. Ethanol

In EcoRI, R and I denote: