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Hay fever and asthma are

Set for future, landed in past! When Jack tried to look for the problem, he found something that made his day even worse. He didn’t bring the toolbox with him. Overconfidence can really be so bad! But he was sure that he will never find them in a forest. So, he decided to go looking for nearest city. Jack checked his encyclopedia for the places around. He found the following data:

$\begin{array}{ccc}\text{Name of the place}& \text{Distance (in kms)}& \text{Population}\\ \text{Cottage}& 9.5& 4,000\\ \text{Arsenal}& 9.5& 1,000\\ \text{Britannia}& 35.3& 5,000\end{array}$

Jack analyzed the table carefully, hid his time machine under some tall bushes and started to go towards __.

The scaly skin of sharks are used

A well-defined nucleus is absent in

What is phagocytosis?

Why plants don't absorb nitrogen from the air directly like carbon dioxide and oxygen

The picture below shows some yeast cells used in bread making. Why do you think the cells form long chains? Choose the option that explains this phenomenon.

The leaves are modified into spines in

Rice is a rich source of starch and iodine gives blue black colouri with starch. If you add iodine solution to chewed rice, what colour will it give?

Why should you always perform stretching exercises before running or jogging?

Raju's mother washed the fish and put it in the sun. After some time he observed decreased water content in those fishes. Which among the following method was the cause of this phenomenon?

Animals store energy in the form of ______.

Fill in the blank with an appropriate relative pronoun.

Mummy will not eat at a restaurant ______ serves meat.

Bile is produced by the liver and stored in the gallbladder. It ______ .

A _______ is the population of different species found in a particular place.

Identify the nucleoid.

Carbon dioxide is called greenhouse gas because it is:

Are some green plants also heterotrophic in nature?Give examples.

Describe the role of fungus and alga in lichens

Anaerobic respiration occurs mostly in prokaryotes. What does it mean?

According to plant requirements, sugar is translocated from ___ osmotic pressure to ___ osmotic pressure areas.

The microorganism present in curd is __.

The technical term used for the androecium in a flower of China rose (Hibiscus rosa sinensis), is

The given figure represents the transverse section of an ovary.

The type of placentation observed in the illustrated ovary is

Who got the Nobel Prize in 1978 for working on enzymes?

Acute diseases last for a very _______ time.

Osmosis is the movement of solvent through a ___ membrane.

What is anaphylaxis?

Which among the following is not a grass eating animal?

In many tumours, there is a blood vessel growth in the direction of tumours. the phenomenon is known as

Which of the following is NOT a germ-killing secretion?

In the process of digestion, the enzymes at location 'X' and location 'Y' are such that 'X' converts proteins into protease and 'Y' converts peptones into peptides. Identify X and Y.

Which of the following animals does not belong to phylum Echinodermata?

The food shown in the given picture is rich in a type of vitamin which helps our bodies to use calcium for bones and teeth. Identify the vitamin.

The lines visible on the leaves are known as:

What is the difference between biosphere and ecosystem

Which among the following is the most possible outcome if you consume adulterated sugar?

How does temperature , water and carbon dioxide affect the rate of photosynthesis?

Earthworms and frogs have a common mode of breathing. Identify the common mode.

___ is caused by an allergy to certain food items, cosmetics or medicines.

The removal of useful components of soil and alteration in the natural soil environment is termed as ________.

The large intestine consists of the ______.