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The system of scientific naming was first introduced by __.

What is the source of sulphonamides?

Which of the following are the three principal body fluids present in humans?

Explain the advantages and disadvantages of mixed cropping.

Which of the following is called white vascular connective tissue?

What are communicable and non-communicable diseases? Give an example of each. [ 3 MARKS ]

What is nitrogen fixation ?

Which of the following are desirable characteristics for breeding chicken?

Name an area in India with very poor vegetation.

Which of the following plant organs act as sink for different minerals?

Why antibiotics do not work on viruses?

Immunoglobulin most abundantly found in mother's milk is

Explain the digestion of fats.

Give reason: It is hard to pull out the husk of a coconut

Q4.A cell is placed in a solution ‘A’ and it swells up. What kind of solution is it? Why does it
happen?

Intercalated discs contain ___________ and __________ Junction

Which type of disease causes abnormalities from birth, owing to gene mutation and also leads to colour blindness, Down's syndrome, cleft lip or palate?

Methane gas is also known as ___.

The branch of biology which deals with the identification, nomenclature, and classification of organisms is called _____.

Give two examples of viral diseases.

Question 5
Find out the correct sentence

(i) Hybridization means crossing between genetically dissimilar plants
(ii) Cross between two varieties is called as interspecific hybridization
(iii) Introducing genes of the desired character into a plant gives a genetically modified crop
(iv) Cross between plants of two species is called as inter varietal hybridisation

(a) (i) and (iii)
(b) (ii) and (iv)
(c) (ii) and (iii)
(d) (iii) and (iv)

Muscles that are under the control of the will of an individual are:

In which stage of mitosis, chromosomes get aligned at the equator?

Match the items in Column A with those in Column B.

$\begin{array}{c}\\ ColumnAColumnB\\ \left(i\right)Penicillium\left(a\right)Pigeon\\ \left(ii\right)Diplococci\left(b\right)Snake\\ \left(iii\right)Streptococci\left(c\right)Bacteriaoccurringinpairs\end{array}$

State the name of the chief pollinating agent against the corresponding plant by choosing from those given in brackets.
(a) Dahlia ___ (Crow, butterflies, mosquito).
(b) Maize ___ (Bees, locusts, rain, wind).
(c) Vallisneria ___ (Wind, water, ants, rabbits).

What is the function of bone, cartilage and ligament ?

What is the largest and smallest organelle in plant and animal

Group of similar cells which perform same function are called__________.

The primary form of sugar transported from the site of photosynthesis to the rest of the plant is ___.

Fruits and vegetables are usually considered as good sources of

Name the types of bacteria involved in nitrification

Is there any similarities between meristematic and permanent tissues?

Why do we feel the cold milk hot on our tongues after eating something spicy

1.which cell organelles is called the kitchen of the cell

Production of food rises by (i)______ while population grows by (ii)_____.

this is a test question

Differentiate between meristematic and permanent tissues.

Respiratory centres of the brain are located in

When a flower arises in the axil of leaf-like structure, this structure is known as __.

Question 9
Why is the damage to the ozone layer a cause for concern? What steps are being taken to limit this damage?