GATE Life Science Mock Test- 2 (Botany & Zoology) - GATE Life Sciences MCQ

Which of the following pairs of 'common name : chemical formula' is incorrect?

The reaction rate between A and B is reduced to one-fourth when the concentration of B is increased twofold. What is the order of the reaction with respect to B?

A solution containing a compound exhibits an absorbance of 0.42 at a wavelength of 275 nm in a cuvette with a light path of 0.1 dm. The molar absorptivity of this compound is ε₂₇₅ = 8.4 × 10³ M^–1 cm^–1. What is the concentration of the compound in ______× 10^–5 M (rounded to the nearest integer)?

According to Wade's rule, the structures of [B₁₀C₂H₁₂] and [B₉C₂H₁₁]² are respectively represented as

If 4g of NaOH is dissolved in 100 ml, 500 ml, 1000 cm³, and 1900 cm³ of water respectively, four stock solutions labeled A, B, C, and D are created. Which of these solutions will exhibit a pH of 12?

What is the bond order of the O–O bond in the O₂^2– ion?

Four grams of NaOH are dissolved in volumes of 100 ml, 500 ml, 1000 cm³, and 1900 cm³ respectively to create four stock solutions designated as A, B, C, and D. If 99 ml of a 1 M HCl solution is added, which stock solution will have a pH closest to 7?

Pair the items in list - A of reversible chemical reactions with those in list - B of corresponding conditions, and choose the correct answer from the options provided below:

The effectiveness of market-based breeding systems in agriculture depends on the genetic map containing a sufficient number of evenly spaced polymorphic markers to accurately identify the desired QTLs or major gene(s). Which of the following indicates such effectiveness?

Phytoalexins are crucial for plant defense mechanisms against pathogens. Identify the INCORRECT statement regarding phytoalexins.

The diagram illustrates the germination rates of seeds that have absorbed water and were subjected to a specific sequence of red (R) and far-red (F) light, with each exposure lasting 5 minutes. The germination percentage was recorded after 72 hours of darkness at a temperature of 25°C. Based on this information, which ONE of the following statements is CORRECT?

Wheat plants that are subjected to extended cold temperatures during the seedling phase bloom sooner than those in the untreated control group. However, the seeds harvested from these cold-treated plants produce offspring that do not exhibit early flowering. This occurrence is referred to as

While all pigment molecules present in a photosystem have the ability to absorb photons, only a select few chlorophyll molecules that are linked to the photochemical reaction center are specialized for converting light into chemical energy. The photochemical process involved in photosynthesis, which necessitates both PS-I and PS-II, also encompasses

Identify the CORRECT correspondence among the plant species listed in GROUP I, the main phytochemical in GROUP II, and the economic or medical application in GROUP III. 

While exploring a forest, you come across an unusual fungus. You excise a reproductive structure and bring it home for further examination. Upon observing it under a microscope, you identify it as a zygosporangium. Based solely on this finding, this fungus is classified as a/an ________________.

The term used to describe the compatibility phenomenon occurring in a flower with heterostyly is known as

In order to investigate the mechanism behind systemic acquired resistance (SAR), a research team has isolated a mutant exhibiting a diminished SAR response. The sequencing of this mutant indicated homozygous mutations in two specific genes, X and Y. Which of the following experiment(s) would be appropriate to determine if the mutant phenotype results from mutations in either one or both of these genes?

The results from an experiment examining seed germination across different genotypes and light conditions are presented, where √ represents germination and X signifies its absence, respectively.

Based on these results, which of the following option(s) is/are CORRECT?

Assume that the anticodon for an unknown amino acid is 3ʹ AUG 5ʹ. The corresponding code on DNA sequence would be

The genes that are homologous and found in different species are referred to as

Which of the following statements is not correct?

The phrase innate behavior refers to a type of behavior exhibited by animals that is

Associate the cell organelles listed in Column I with their corresponding functions provided in Column II.

The interaction of an antigen with the receptor on B-cells

Pair the autoimmune disorders in Column I with their corresponding self-antigens listed in Column II. 

Which of the following amino acids possess more than one chiral center?

A cross is performed between two organisms with genotypes AaBb x AaBb, where the A and B loci assort independently. The offspring from this dihybrid cross were subsequently allowed to self-fertilize. The percentage of the offspring that exhibited segregation at locus A (i.e., producing A- and aa offspring) will be _________ (in integer).