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Krish watered the seeds regularly. After some days, Krish noticed seeds are

A moderately warm temperature (25${}^{\circ }$C to 35${}^{\circ }$C) that is usually favorable for germination is called as __________

Differences between protozoa and metazoa

Main source of water vapour is burning of _______ which produces carbon dioxide and water vapour.

What is the function of epidermal tissue and what are its different types?

Charles Darwin described the idea of evolution in the book-

Skin cell are flat so they form a ___________barrier

Glycolipids are formed by the combination of

Identify the organism in the picture. ___.

Write two important characteristics of sponges (Phylum: Porifera)

The _________ extends from the medulla and runs through the whole length of the vertebral column.

The animals (Kingdom Animalia) are mainly grouped under two categories

(a) bilaterally symmetrical and radially symmetrical

(b) coelomate and acoelomate

(c) aquatic and terrestrial

(d) vertebrates and invertebrates

The site of production of ADA is

How cristae produces ATP with oxizomes?

Which one of the following is present in the integument of frog but not in that of mammals?

What is hollow gut . Is there any difference between hollow gut and gastrovascular cavity?

Why are cells small

In the given question, a part of a sentence is printed in bold. Below each sentence, some phrases are given which can substitute the bold part of the sentence. Find out the phrase which can correctly substitute that part of the sentence. If the sentence is correct as it is, mark the answer as 'No correction required' or 'No Improvement'.

Birds sit on the boughs of trees in Shakshi’s garden and with their sweet notes fill the air with music.

What was the main cereal produced by the Rig Vedic people?

'X' is a bacteria that grows under anerobic conditions. It is found in spoiled meat curry. Identify 'X'.

Name the following:
(a) Simplest sponges
(b) Commonly known as bath sponge

__ have special proteins, which break the components of the cell for cellular digestion.

Write down the names of animals products which are used as food.

In order to attract pollinating agents, flowers of cross-pollinating plants adopt various devices like_________

What is meant by selectively permeable membrane ?

If a person is handicapped is his/her offspring will be also handicapped yes or no justify

I am a way of coding information, in a similar way to FM radio, allowing information to be transmitted both quickly and accurately by electrical means. Who am I ?

What are different types of animal tissues and what are its functions?

Write two differences between plant cell and animal cell.

Define plant breeding ? Describe the various methods of plant breeding.

Assertion [A] : In hemichordates, body is divided into proboscis, collar and trunk.

Reason [R] : The proboscis helps in digestion.

Question 17
In the given Figure 15.1 the various trophic levels are shown in a pyramid. At which trophic level is maximum energy available?


(a) T4
(b) T2
(c) T1
(d) T3

The light reaction in a photochemical phase takes place in which of the following locations?

The largest animal cell is

Cells of parenchyma tissue are __ in shape

Cockroach and other insects have blood which

Match the following images with the respective given steps P,Q,R,S:
P. Macrophage receptors recognise the invading virus.
Q. The virus is drawn into the macrophage.
R. The virus gets packaged into a sac pinched off from the cell membrane of the macrophage.
S. The sac fuses with lysozyme which safely dismantles the virus without digesting the macrophage itself.

5 differnlences between animal and plant cell.

What is gene therapy?

Thallus body with naked cytoplasm with a number of nuclei moving on decaying twigs and leaves engulfing organic material is characteristic of

Which of the following layers of the skin contains blood vessels?

Which of the following disease can be cured using antibiotics?