AIPMT Prelims Botany Class 12 Questions

Removal of introns and joining of exons in a defined order during transcription in called

Yeast is used in the production of

Identify the possible line “A” in the following food chain: Plant → insect → frog → “A” → Eagle

Which one of the following areas in India, is a hotspot of biodiversity?

Which one of the following is an example of carrying out biological control of pests/diseases using microbes?

A normal-visioned man whose father was colour-blind, marries a woman whose father was also colour-blind. They have their first child as a daughter. What are the chances that this child would be colour-blind?

Even in absence of pollinating agents seed-setting is assured in

The most abundant prokaryotes helpful to humans in marking curd from milk and in production of antibiotics are the ones categorised as

Which one of the following is not a part of a transcription unit in DNA?

A nitrogen-fixing microbe associated with Azolla in rice fields is

If one strand of DNA has the nitrogenous base sequence as ATCTC, what would be the complementary RNA strand sequence?

The upright pyramid of number is absent in

Given below is an imaginary pyramid of numbers. What could be one of the possibilities about certain organisms at some of the different levels?

Removal of RNA polymerase III from nucleoplasm will affect the synthesis of

F₂ generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as 1 : 2 : 1. It represents a case of

Monascus purpureus is a yeast used commercially in the production of

The coconut water and the edible part of coconut are equivalent to

Which one of the following is not a gaseous biogeochemical cycle in ecosystem?

Organisms called Methanogens are most abundant in a

Which one of the following have the highest number of species in nature?

Mutations can be induced with:

Which one of the following also acts as a catalyst in a bacterial cell?

Nucellar polyembryony is reported in species of

Filiform apparatus is a characteristic feature of

Wind pollination is common in

In which one of the following pollination is autogamous?

Mass of living matter at a trophic level in an area at any time is called

Secondary sewage treatment is mainly a

Which one of the following shows maximum genetic diversity in India?

Which of the followings is mainly produced by the activity of anaerobic bacteria on sewage?

"Jaya" and "Ratna" developed for green revolution in India are the varieties of

Which one of the following conditions correctly describes the manner of determining the sex in the given example?

What type of human population is represented by the following pyramid?

Ethanol is commercially produced through a particular species of

When two unrelated individuals or lines are crossed, the performance of F₁ hybrid is often superior to both its parents. This phenomenon is called

Given below is a sample of a portion of DNA strand giving the base sequence on the opposite strands. What is so special shown in it? 5’ ——— GAATTC ——— 3’ 3’ ——— CTTAAG ——— 5’

The most common substrate used in distilleries for the production of ethanol is

An organism used as biofertilizer for raising soyabean crop is

Which one of the following cannot be explained on the basis of Mendel’s Law of Dominance?

The genotype of a plant showing the dominant phenotype can be determined by

The most specific characteristic of genetic code, is its being

Satellite DNA is useful tool in

ABO blood groups in humans are controlled by the gene I. It has three alleles–Iᴬ, Iᴮ and i. Since there are three different alleles, six different genotypes are possible. How many phenotypes can occur?

Select the correct statement from the ones given below with respect to dihybrid cross

Select the two correct statements out of the four (a–d) given below about lac operon.

Which one of the following symbols and its representation, used in human pedigree analysis is correct?

Apomictic embryos in citrus arise from

Wind pollinated flowers are

Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called

The biomass available for consumption by the herbivores and the decomposers is called