GATE Life Science Mock Test- 3 (Botany & Zoology) - GATE Life Sciences MCQ
30 Questions MCQ Test GATE Life Sciences 2026 Mock Test Series - GATE Life Science Mock Test- 3 (Botany & Zoology)
Disagree : Protest : : Agree : _______
(By meaning of words)
(By meaning of words)
Ankita needs to ascend 5 stairs starting from the ground level, adhering to these rules:
- At any moment, Ankita can advance either one or two stairs at a time.
- At no point can Ankita step down to a lower stair.
Let F(N) represent the total number of distinct ways Ankita can reach the Nth stair. For instance, F(1) = 1, F(2) = 2, and F(3) = 3.
The value of F(5) is _______.
Which of the figures labeled P, Q, R, and S depicts the graph of the following function?
f(x) = ||x 2| - |x - 1|
f(x) = ||x 2| - |x - 1|
Which reagent(s) can effectively facilitate the transformation of P to Q with a good yield?
In a reaction involving a single substrate, a competitive inhibitor was introduced to investigate its influence on Km and Vmax. Which of the following equations would be applicable?
Determine the product formed from the following Diels-Alder reaction.
Consider two distinct processes in which the volume of an ideal gas increases to double its original value isothermally:
(i) Reversible expansion (work done = wrev)
(ii) Irreversible expansion, where the external pressure matches the final pressure of the gas (work done = wirrev)
Here, 
____.
Pair the coordination complexes listed in Column I with their corresponding properties from Column II.
(Given: Atomic numbers of Mn: 25; Co: 27; Ni: 28)
Compounds P and Q undergo E2 elimination with rate constants k1 and k2 respectively, as illustrated below. Which of the following option(s) is/are CORRECT?
According to the Hard-Soft Acid-Base (HSAB) principle, which option(s) accurately reflect the trend of solubility in water?
The reduction potentials of 
are 1.33 V and -0.74 V, respectively. What is the reduction potential of 
?
add equations (1) and (2).
The pH of a buffer solution containing 0.20 mole of NH4OH and 0.25 mole of NH4Cℓ per litre where the dissociation of NH4OH at room temperature is 1.81 × 10–5 will be
Which of the following does not qualify as an edaphic factor?
Rotenone is a chemical frequently utilized to eliminate insect pests on agricultural crops and fish in bodies of water. It functions by blocking electron transport from the NADH dehydrogenase enzyme in Complex I to ubiquinone within the mitochondrial electron transport chain. Which of the following reasons accounts for the ability of plants to withstand the application of rotenone?
Which of the following possesses oil and sometimes starch as stored nutrients?
Associate the disease name with its corresponding causal organism.
Determine the floral formula along with the corresponding family and the specific plant species.
The periderm is a protective tissue located in the stems and roots of gymnosperms and woody dicotyledons. It plays a role in increasing thickness through secondary growth. Match the components of periderm listed in Group I with the corresponding cell/tissue types provided in Group II.
Pair the rice diseases listed in Group I with their corresponding causal agents found in Group II.
Which of the following groups is/are spread through subterranean roots?
- 1. Bryophyllum and Kalanchoe
- 2. Ginger, Potato, Onion and Zamikand
- 3. Sweet Potato and Dahlia
- 4. Asparagus and Tapioca
In eukaryotic cells, there are three types of RNA polymerases (I, II, and III), each responsible for synthesizing a specific class of RNA molecule. Which of the following pairs is correctly matched?
A female plant exhibiting cytoplasmic male sterility and possessing the nuclear genotype rr is mated with a male-fertile male plant having the genotype RR. Both genotypes RR and Rr are capable of restoring fertility, while the genotype rr is not. When an F1 female plant with the genotype Rr is test-crossed with a male-fertile male having the rr genotype, what percentage of the resulting population will be male fertile? (Provide your answer as an integer)
Which hormone listed below is classified as a modified amino acid?
What do the fossil remains of Archaeopteryx reveal?
Which of the following options best characterizes an animal's “innate behavior”?
The afferent nerve fiber transmits impulses from
In a population consisting of 1000 wild dogs inhabiting a grassland, there were 360 dogs with the black body color having the genotype BB, and 480 dogs with the genotype Bb. The remaining dogs in this population exhibited a white color with the genotype bb. Using this information, calculate the frequency of allele “b” in the population and round your answer to one decimal place.
The injection of dinitrophenol (DNP) into a rat leads to a rapid increase in its body temperature due to which of the following reasons?
It has been established that an abundance of glucose can inhibit the activation of the lac operon, along with other operons that regulate enzymes related to carbohydrate metabolism in E. coli. Which of the following processes describes this phenomenon?
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