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Q94. Which of the following statements is correct about Superbugs?

Question 15

We should not allow mosquitoes to breed in our surroundings because they



(a) multiply very fast and cause pollution

(b) are vectors for many diseases

(c) bite and cause skin diseases

(d) are not important insects

Why is heart considered as an organ? Why not tissue

State the surgical method of contraception in females.

Enter 2 words or less.

Bholu asked his doctor, "Is there anything to fight against the invaders entering our body?". Neighbour doctor very calmly answered him, "Yes, we do have. We have a system called _______ ".

Question 27

How can we prevent the following diseases?

(a) How does bacteria become resistant to antibiotics?

(b) What is the use of penicillin?

Identify the steps in photosynthesis from the following pictures:

Identify the organelle where cellular respiration takes place.

Which of the following is not used for crop improvement?

Question 28

We should plant trees and nurture the ones already present in the neighbourhood. Why?

Light reaction of photosynthesis takes place in which part of chloroplast?

A long and branched animal cell is :

Are surgeries done for the below endocrine glands , if yes please mention why is the surgery done.

i) Adrenal glands

ii) Pancreas

iii) Pituitary glands

iv) Thyroid gland .

Which of the following are included in asexual methods of reproduction?

Which is the cell organelle that help to get energy from food ?

In noncyclic photophosphorylation, the electron released by $P_{680}$ is replaced by

Oxygen cannot be perceived by senses. Does that mean it is not matter?

Which type of cells are more efficient-multicellular or unicellular?

Which of these scenarios would result in the formation of identical twins?

The concentration of solutes is equal inside and outside the cell and we call this condition as __________

Autotrophs use [X] and convert into [Y] and synthesise [Z], which of the given option is correct for X, Y, and Z?

Identify the type of plastid that imparts the red colour to the following plant part.

Find the correct sequence of development of the offspring after fertilization.

3 lines about sprinkler irrigation and Drip irrigation...

In humans, the alleles for curly hair (H) is dominant, and the allele for straight hair (h) is recessive.

If a homozygous dominant female mates with a heterozygous male. What is the probability that the offspring will have curly hair?

Which type of nerve is present in the tongue?

Question 6
Name the microorganisms which can fix atmospheric nitrogen in the soil.

Which of the following is not a step in mushroom cultivation?

What are the structural units of nervous system called? Draw a well labelled diagram.

X and Y are the two types of cells. The cells X have a well-organised nucleus which is separated from the cytoplasm by the nuclear membrane. On the other hand, cells Y do not have a real nucleus, their nuclear material is in direct contact with the cytoplasm.

(a) What type of cells are (i) X and (ii) Y
(b) Give one example each of cells like (i) X and (ii) Y?

Which of the following are changes seen in boys during adolescence?

Given below is diagrammatic view of a typical dicot embryo. Identify the parts labelled A, B, C and D and select the right option amongst them.

Usually adolescence begins ___ in girls than in boys.