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Tree frog is:

Global warming results in

The restriction enzyme EcoRI from E.coli is expected to cleave DNA at the following sequence

Select the wrong statement among the following given statements.

Which of the following belongs to the group arthropods?

Calcium deficiency leads to decreased growth because:

The technical term used for the androecium in a flower of China rose (Hibiscus rosasinensis) is:

Cancer of cervix is caused by

Read the following statements about muscle contraction in humans:

i. Chemical energy is converted into mechanical energy during muscle contraction

ii. Acetylcholineeasterase is an enzyme that catalyzes the production of acetylcholine

iii. In a contracted muscle, volume remains the same.

iv. A contracted muscle becomes shorter and thicker.

Which class do birds belong to?

What will happen the cell wall when they are placed in the following solution

​​​​​​​​​​​​a) hypotonic solution

b) hypertonic solution

c) isotonic solution

Kayco Ltd. is manufacturing detergents. They decide to launch a new range of herbal products. As they are in a hurry they have tested products on animals only. The necessary information is missing on the package about the safety and ingredients of the detergents. The management also plans to launch a new factory in a tribal area where the required raw materials are easily available and the labour-men, women, and children are available for work at low wages in the absence of development opportunities and schools :

(i) Which values do you find disturbing in the above paragraph?

(ii) Will the decision to install a new unit in a tribal area help society? Highlight the social values involved in this decision.

Which of the following statements about dietary fibres are incorrect?

A. It stretches the intestinal muscles, so they can push unwanted waste.

B. Food rich in fibre content is milk.

C.They are digestible substances like cellulose, which is found in plant foods.

D.They are stringy, indigestible substances like pectin, hemicellulose found in plant foods such as broccoli.

The linkage map of X - chromosome of fruit fly has 66 units, with yellow body gene (y) at one end and bobbed hair (b) gene at the other end. The recombination frequency between these two genes (y and b) should be :

Juxtaglomerular cells of the renal cortex synthesise a hormone called

Ginger is an underground stem. It is distinguished from the root because

Which of the following molecules fulfills the two requirements stated below?

1. $\alpha -(1,2)-$glycosidic linkage

2. Not a reducing sugar

__ acts like a dam between the vascular bundles and the cortex.

Listed below are respiratory volumes and capacities with their respective values. Which pair is correctly matched?

Which of the following work even at very high temperatures?

The drug used to increase cardiovascular effects in human beings is:

Mitral valve is also called

Which of the following is incorrect with respect to the tapetum?

What is incorrect about DNA?

Water is not required for fertilization in

Question 3

An ecosystem includes



(a) all living organisms

(b) non-living objects

(c) both living organisms and non-living objects

(d) sometimes living organisms and sometimes non-living objects

Match the following and choose the correct option.



$\begin{array}{cc}\text{Column I}& \text{Column II}\\ \text{A. Head}& \text{1. Enzymes}\\ \text{B. Middle Piece}& \text{2. Sperm motility}\\ \text{C. Acrosome}& \text{3. Energy}\\ \text{D. Tail}& \text{4. Genetic material}\end{array}$