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Give one example of each of diseases caused by bacteria and virus.

‘Dolly’ was created using the udder cell nucleus from __________ and an enucleated egg cell from ____________

Materials of biological origin which are commonly used to maintain and improve soil fertility are:

Which of the following is a viral disease?

What are the symptoms of typhoid?

In anaerobic respiration, which of the following is true?

Which of the following is the most popular variety of mushroom cultivated in India?

Question 10
Which one of the following causes kala-azar?

(a) Ascaris
(b) Trypanosoma
(c) Leishmania
(d) Bacteria

Green manure enriches soil in-

Which of the following is not an edible variety of mushroom?

Name the two devices that are fitted inside the uterus to prevent the implantation of an embryo.

What is the role of cellulose in cell wall?

In an angiosperm, the ovary develops after fertilisation into____i____ and______ii_____ develops into seeds.

The information in which alternative completes the given statement?

Most common blood group is

Pancreatic juice makes the medium ___ in the small intestine for the action of enzymes present there.

Which of the following statements are true about Antigens?

The diagram given below is the vertical section of maize seed. Identify the option where the alphabets are correctly identified.

Question 29
What happens when rain falls on soil without the vegetational cover?

(a) Rainwater percolates in soil efficiently
(b) Rainwater causes loss of surface soil
(c) Rainwater leads to the fertility of the soil
(d) Rainwater does not cause any change in soil

Poultry farming includes the rearing of which of the following animals?

What are A, B, C, D, E and F ?

Which of these diseases are not caused by fungi?

The temperature on consecutive days in the first week of April were:
${33}^{\circ }C,{33}^{\circ }C,{30}^{\circ }C,{31}^{\circ }C,{36}^{\circ }C,$${37}^{\circ }C,{35}^{\circ }C$.
The average temperature of the first week was ______${}^{\circ }C$.

Which meristem is present at the base of the leaves or internodes on twigs?

On treatment with iodine, the presence of starch gives blue-black colour because

A plant cell can be identified from an animal cell by the :
(a) absence of centrosome.
(b) presence of cell membrane.
(c) presence of vacuoles
(d) none of the above

How do you differentiate between capture fishing, mariculture and aquaculture? [3 MARKS]

Draw a neat labelled diagram of sperm.
[3 MARKS]

What type of digestion takes place in cnidarians?

What is the main plant tissue that forms the annual rings in the trunk of some trees?

The habitat depicted in the picture given below is___.

Chyme has

(a) Pigeon pea is a good source of ___.

(b) Berseem is an important___crop.

(c) The crops which are grown in rainy season are called___crops.

(d) ___are rich in vitamins.

(e)___crop grows in winter season

Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.

In the experiment for testing the action of pepsin on egg-white, we concluded that

Which of the following is the tissue in the nose that helps in recognising smell?

Which of the following statements is correct?

Label the parts A, B, C, and D.

What will happen to the grapes if they are kept in honey?

The technique in which a foreign DNA is coated on the surface of tungsten or gold particles and shot into the target cells is known as:

Apart from Iodine, name two more solutions which are used to stain the slides of the cell