List of top Botany Questions asked in GATE Life Sciences

Which one of the following metabolic intermediates is common to glycolysis, nucleotide synthesis and glycogen synthesis?

Which of the following is/are typical characteristic(s) of a fungal cell?

Which one of the following fungi produces aflatoxins

Which one of the following rooted tree topologies best describes the primate phylogeny?

Which one of the options correctly matches the human tissues/organs with their embryonic germ layers of origin?

Tissues/organs		Embryonic germ layers
(P)	liver	(i)	ectoderm
(Q)	cerebellum	(ii)	endoderm
(R)	femur	(iii)	mesoderm

Codon bias is correlated with the relative frequencies of which one of the following types of RNA?

Which one of the following tissues/organs is least likely to experience graft rejection when transplanted from a person to an unrelated person?

The mRNA of a hypothetical plant gene HSDU is 800-nucleotide long and encodes a protein of 160 amino acid residues. The calculated length of HSDU CDS would be____ nucleotides (in integer).

In a genetic cross between two pure-line parents differing in the two independently segregating traits, plant height (tall vs dwarf) and flower color (purple vs white), all the F1 plants were tall with purple flowers. In a testcross population involving these F1 individuals, the expected percentage (%) of dwarf plants with purple flower would be___ (in integer).

In wild-type Arabidopsis thaliana, the four types of floral organs (sepal, petal, stamen, carpel) are arranged in concentric whorls from outside to inside. With reference to the ABC model of floral organ patterning, match the homeotic mutants in Group 1 with their respective arrangements of organs in the four whorls given in Group 2.

Group 1	Group 2
(P) A class mutants	(i)sepal, sepal, carpel, carpel
(Q) B class mutants	(ii) sepal, petal, petal, sepal
(R) C class mutants	(iii) carpel, stamen, stamen, carpel
	(iv) sepal, sepal, petal, petal

Which of the following combinations of plant diseases and the types of their causal organisms is/are CORRECT?

Which of the following statements is/are CORRECT with reference to rubber production from plants?

Which of the following plant diseases is/are caused by nematode?

Which of the following tissue types is/are established during embryogenesis in wild-type Arabidopsis thaliana?

Which one of the following plant families does apple (Malus domestica) belong to?

The collateral and open type of vascular bundle with endarch xylem strand is usually found in

Which one or more of the following statements is/are correct in the processing of pre-mRNA in eukaryotes?

If a 10 mM solution of a biomolecule in a cuvette with a path length of 10 mm absorbs 90% of the incident light at 280 nm, the molar extinction coefficient of the biomolecule at this wavelength is ____ M\(^{-1}\)cm\(^{-1}\). (Round off to two decimal places)

Mammalian cells cultured at low temperature (25 to 30 °C) leads to an increased sterol content in the membrane. Elevated sterols in the membrane results in

Which one of the following metabolic intermediates is common to glycolysis, nucleotide synthesis and glycogen synthesis?

In wild-type Arabidopsis thaliana, the four types of floral organs (sepal, petal, stamen, carpel) are arranged in concentric whorls from outside to inside. With reference to the ABC model of floral organ patterning, match the homeotic mutants in Group 1 with their respective arrangements of organs in the four whorls given in Group 2.

Group 1	Group 2
(P) A class mutants	(i)sepal, sepal, carpel, carpel
(Q) B class mutants	(ii) sepal, petal, petal, sepal
(R) C class mutants	(iii) carpel, stamen, stamen, carpel
	(iv) sepal, sepal, petal, petal

Which of the following statements is/are CORRECT with reference to rubber production from plants?

Which one of the following plant families does apple (Malus domestica) belong to?

Which of the following tissue types is/are established during embryogenesis in wild-type Arabidopsis thaliana?

Which of the following plant diseases is/are caused by nematode?