HSC Science कक्षा १२ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Botany

With respect to EichhorniaWith respect to Eichhornia

Statement A: It drains off oxygen from water and is seen growing in standing water.

Statement B: It is an indigenous species of our country

Suggest a solution to the water crisis and explain its advantages.

Differentiate bio-medicines and botanical medicines.

What is TSM? How does it classify and what does it focus on?

Which TSM is widely practiced and culturally accepted in Tamil Nadu? - explain.

Test cross involves

In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seed pant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in the F₁ generation?

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

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

Which Mendelian idea is depicted by a cross in which the F₁ generation resembles both the parents

In a test cross involving F₁ dihybrid flies, more parental type offspring were produced than the recombination type offspring. This indicates

Select the period for Mendel’s hybridization experiments

Among the following characters which one was not considered by Mendel in his experimentation pea?

Name the seven contrasting traits of Mendel.

What is back cross?

Define Genetics.

What are the reasons for Mendel’s successes in his breeding experiment?

Explain the law of dominance in a monohybrid cross.

List the ways by which seeds can be stored for longer duration.

Discuss the importance of neem in seed storage?