RE-NEET Botany Questions

Match List-I with List-II.

Phyllotaxy is the pattern of arrangement of ________.

Match List-I with List-II.

Length of the stem at time 0 is 20 cm. The arithmetic growth rate is 30 cm per day. What is the length of the stem at the end of the 7th day?

Given below are two statements:

Statement I: In gymnosperms, the male and female gametophytes remain within the sporangia.

Statement II: In gymnosperms, seeds are not covered.

In the light of the above statements, choose the most appropriate answer from the options given below:

Smooth endoplasmic reticulum _________.

How many molecules of pyruvic acid are produced at the end of glycolysis from 206 molecules of glucose?

The correct sequence of adult cell cycle phases is _________.

Cell theory was formulated by _________.

Given below are two statements :

Statement I: Chromosomes are fully condensed at the end of prophase I.

Statement II: Meiosis I resembles mitosis.

In the light of the above statements, choose the most appropriate answer from the options given below :

Which of the following statements regarding photorespiration are correct? (a) Do not occur in C₃ plants (b) CO₂ is consumed and O₂ is generated (c) Phosphoglycolate is formed (d) No synthesis of ATP and NADPH

Which of the following are characteristics of prokaryotic cells? (a) Ribosomes are made of 50S and 30S subunits (b) They can have plasmids (c) They contain mesosome (d) They have peroxisomes

Endomembrane system includes _______.

Match List-I with List-II.

Which of the following plant growth regulators promotes internode elongation prior to flowering in cabbage?

The plastid that stores xanthophyll is known as _______.

Photorespiration reaction catalyzed by RuBisCo is shown below : RuBP + O₂ → 3-Phosphoglycerate + X Identify “X” from the given options :

Match List-I with List-II.

Which of the following are characteristic features of Solanaceae family ? (a) Flowers are bisexual and actinomorphic (b) Calyx have five sepals and are united (c) Androecium have five stamens and are epipetalous (d) Ovary is inferior Choose the correct answer from the options given below :

Which pigment has absorption peak at 700 nm in the photosynthetic reaction centre PS I (P₇₀₀) ?

Mitochondrial inner membrane encloses ______.

Symbiotic association between fungi and algae are called ______.

Which of the following plant growth regulators is used as herbicide ?

How many turns of Calvin cycle are required for the formation of three molecules of glucose ?

Arrange the following taxonomic categories in ascending order. (a) Genus (b) Class (c) Order (d) Phylum (e) Family (f) Kingdom (g) Species Choose the correct answer from the options given below :

Select the correct sequence of experiments that led to a gradual understanding of photosynthesis in green plants.

Sphenopsida class belongs to ________.

Match List-I with List-II.

Which of the following is not a prokaryote?

Genus represents ________.

Mad cow disease is caused by ________.

How many theca are present in each lobe of a typical bilobed angiosperm anther?

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: In an experiment, Mendel observed that the F₁ progeny plants are all tall and none are dwarf. Reason R: Stem height is a contrasting trait, with tall being dominant and dwarf being recessive. In the light of the above statements, choose the most appropriate answer from the options given below:

Which of the following plant produces non-albuminous seeds?

For a person with blood group ‘O’, which of the following is not a possible combination of parents’ blood group genotypes?

Arrange the following in descending order of number of species in the Amazonian rain forest. (a) Plants (b) Birds (c) Fishes (d) Invertebrates (e) Mammals

If the diploid chromosome number of a typical angiosperm is 36, what would be the chromosome number in its endosperm?

Which of the following in female gametophyte of an angiosperm helps in guiding the pollen tube for fertilizing the eggs?

Match List-I with List-II.

Which of the following are primary consumers in a food chain?

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Abingdon tortoise in Galapagos islands became extinct within a decade after goats were introduced. Reason R: Goats were more efficient at browsing than Abingdon tortoise. In the light of the above statements, choose the most appropriate answer from the options given below:

Which of the following statements about lac-operon is correct?

Given below are two statements:

Statement I: Down's syndrome is caused by the absence of one of the X-chromosomes.

Statement II: Turner's syndrome is caused by the presence of an additional copy of the chromosomes.

In the light of the above statements, choose the correct answer from the options given below:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: The logistic growth model of populations is considered more realistic than the exponential growth model. Reason R: Resources are finite. In the light of the above statements, choose the most appropriate answer from the options given below:

Consider a population of 10 million cells. Given the per-capita birth rate of 0.002 (per unit time) and the per-capita death rate of 0.002 (per unit time), the expected number of cells after 10 generations is:

Which of the following statements are correct? (a) Energy flow from producers to consumers is unidirectional (b) Energy pyramid can never be inverted (c) Transfer of energy follows the 1% law Choose the correct answer from the options given below:

Which of the following enzymes synthesizes precursor mRNA?

The regions with high level of species richness, high degree of endemism and a loss of 70% of the species and habitat are identified as:

Which of the following simple tissues are commonly found in the fruit walls of nuts and pulp of pear?

In a chromosome, there is a specific DNA sequence, responsible for initiating replication. It is called as: