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There would be no plant life is chloroplast does not exist justify

Which of the following organism is radially symmetrical?

Pteridophytes have naked embryos and vascular tissue.

Vitamins, minerals and proteins in suitable amounts are given to body by

Cytokinesis of a plant cell occurs due to

Which of the following statement is not true about muscle contraction?

How many types of organisms are believed to be present on Earth?

Coelom in Echinodermata is:

Which of the following risks are associated with genetically modified crops?

Asexual reproduction in fungi occurs by

Which of the following is NOT a connective tissue?

What is the residual capacity of the lungs

What is choanocyte?

The process of protein synthesis occurs in ___ .

Which of the following is not associated with the dermis?

A monocotyledonous endospermic seed is ___

In acquired immunity

There would be no plant life if chloroplast does not exist.justify

Which of the following viruses causes AIDS?

___ is an instrument for measuring the air capacity of the lungs.

Define meristematic tissue. Why do meristematic cells lack vacuoles?

What is the meaning of each term in phylogenetic tree and how are they related to each other?

Describe the role played by lysosomes why are these termed as suicidal bags how do they perform their functions

Sarcoplasm is present in:

Which gland smoothens the margins of eyelids and prevents the overflow of tears, smoothens the margins of eyelids and prevents overflow of tears?

Statement 1: Pleura is the double layered protective membrane of the lungs.

Statement 2: There are cartilaginous rings in the bronchioles.

Which of the following is found in both rose plant cells and in ant cells?

Difference between compost and vermi compost.

Identify the correct statement, from the given options?

What is the other name of redworms?

Endoskeleton of fishes are made up of cartilage and bone; classify the following fishes as cartilaginous or bony:
Torpedo, Sting ray, Dog fish, Rohu, Angler fish, Exocoetus. [3MARKS]

Excess accumulation of _______ gas(es) causes warming of earth is called as global warming.

The function of the coronary circulation is ________________

Briefly explain depletion of ozone layer and its effects.

Name the types of weathering.

Give various sources and harmful effects of soil pollution.

Which of the following are communicable diseases?

What are heterotrophic and autotrophic organisms? [2 MARKS]

Name two diseases caused by bacteria.
Are there any vaccines that can be administered to prevent these diseases? [ 2 MARKS ]

What is the most important difference between a prokaryotic and a eukaryotic cell?

What is literal meaning of (a) Arthropoda; (b) Mollusca.

Fill in the blanks :
(a) In bean seeds, ___ grows faster and the seeds are brought___ ground.
(b) ___ is a protective layer of radicle and ___ protects the rolled plumule.
(c) A seed is protected by ___ and ___
(d) Seeds absorb water through ___ which also helps in the diffusion of respiratory gases.
(e) Rice, wheat, and maize are rich in ___ food.

Name the following :

(a) Neurons which carry impulses towards brain.

(b) Process of neuron which carries impulses away from cyton.

One day while climbing up a tree, Nirav, a 14-year-old boy, fell off hard on his face. He lost two of his front teeth from the upper jaw. What is the present dental formula of Nirav's teeth?

Where exactly do we use the rubber stoppers in lab?

What is immunisation??