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The outermost covering of the brain is called ________ .

Which of the following is/are reason(s) that archaebacteria is not included in the kingdom Monera?

Name the simple sugar found in plant tissues which is also a product of photosynthesis.

Identify the vitamin which grows in body only when it is exposed to Sunlight and is responsible for preventing osteoporosis.

Doctors say to some people that they have less haemoglobin. Then , does our blood become yellow , as we have more plasma content in our body which is a pale yellow liquid ?

Difference between saprophyte and heterotrophic

Explain how, deforestation makes the soil infertile leading to desertification.

Observe the given experimental set-up carefully.

Why does adrenal hormone gets shorter

Why do women bleed at the end of the menstrual cycle?

Development of Sex Organs in females is carried out under the influence of __.

Name the microbe which causes malaria disease.

Name an animal food obtained from insects.

The period of development of embryo inside the uterus is called

The chemical ___________ present in clove is used for destroying cell walls of microorganisms and fungus.

Which of the given figures represents budding in Hydra?

Match the following:
$\begin{array}{cccc}1& \text{cerebellum}& \text{A}& \text{It is located in the hindbrain, posterior to the cerebellum}\\ 2& \text{cerebrum}& \text{B}& \text{The principal and most anterior part of the brain in}\\ & & & \text{vertebrates,located in the area of the skull and consisting}\\ & & & \text{of two hemispheres,left and right,separated by a fissure.}\\ 3& \text{Medulla oblongata}& \text{C}& \text{It is located in the hindbrain,posterior to the cerebrum}\\ & & & \end{array}$

The migratory bird which comes from Siberia to India for a few months every year is :
(a) crow
(b) koel
(c) crane
(d) kingfisher

Those species (of plants and animals) which are found exclusively in a particular area are called :
(a) epidemic species
(b) pelagic species
(c) pandemic species
(d) endemic species

Which of the following disease is not caused by bacteria?

(a) cholera (b) typhoid (c) tuberculosis (d) measles

The 'Bar Tailed Godwits' travels__ Kilometers to migrate.

Name six endocrine glands in the human body. Also name the hormones secreted by each one of these glands.

Explain why, people are advised to use iodised salt in cooking food.

Ecological niche of an organism represents

Question 19

Write the correct answer from the given four options.

$\sqrt[3]{31000}$ is equal to

a) 10
b) 100
c) 1
d) None of these

Read the given statements and select the correct option.
Statement A: A plant or animal species which is exclusively found in a particular area and is not found naturally anywhere else, is known as endemic species.
Statement B: The existence of endemic species is often threatened due to the introduction of exotic species from some other geographical area.

Choose the correct option with respect to the given statements.
Statement 1: All cells arise from pre-existing cells.
Statement 2: All cells have a cell wall.

The symbiotic relationship between algae and fungi is called ___.

Why is there is a prohibition sign on this picture?

Why does an athlete breathe faster and deeper than usual after finishing a race? What kind of respiration happens during running? What are the side effects that occur because of this type of respiration? What is the other type of respiration? Give equations for both types. [5 MARKS]

__ diseases are not caused by pathogens.

What is the first trophic level in a lake ecosystem?

State one change in the body shape of grown up boys and one change in the body shape of grown up girls which makes them look different.

I am a pear shaped, muscular, thick-walled organ, found in females. I carry the fertilized egg and nourish it. Who am I?

Rubeola virus is the causative organism of ___ .

Name the hormone whose deficiency causes diabetes.

Which life process ensures that a plant or animal species will not disappear from the earth ?

What is the age of menopause?

Which activity would a person do in animal husbandry if he wants to obtain eggs?

What are Oxygen incubators and why do we need these for patients?