A farmer cultivates a unique species of tomato plants. The two traits selected for breeding were: Colour
of the fruits and height of the plants. The farmer initially crosses a homozygous tall plant bearing red
fruits (TTRR) with a dwarf plant bearing yellow fruits (ttrr) and the genotype of all the offsprings of the
F1 generation was TtRr. Next, he crosses two F1 generation plants (TtRr).
Tall plant with red fruit Dwarf plant with yellow fruits
(a) Explain the phenotype of the offsprings of the F1 generation obtained from the initial cross.
(b) Mention the phenotypic ratio of the F2 generation offsprings.
(c) State Mendel’s Law of Independent Assortment.

15] Select the correct answers to the questions from the given options. (Do not copy the questions, write the correct answer only).
The structure that lies at the junction of the choroid and the iris and is itself a part of the choroid is called:

15] Select the correct answers to the questions from the given options. (Do not copy the questions, write the correct answer only).
The optimum temperature for photosynthesis is:

Given below is a picture of a tree. Mention the scientific phenomena occurring in the parts labelled (a),
(b) and (c).
(c)
(b)
(a)

15] Select the correct answers to the questions from the given options. (Do not copy the questions, write the correct answer only).
The number of live births per thousand people per year is called:

What are biomedical wastes? Give an example.

State any two harmful effects of acid rain.