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Which of the following is Chlamydomonas?

Stomatal opening and closing involves the role of various ions. In the given figure, arrows depict the movement of certain ions during stomatal opening in light. Identify the ions (P, Q, R and S) and select the correct option.

Which of these is applicable to insect pollinated flowers?

Which among the following underlined verbs is an intransitive verb?

Why manure helps in increasing the number of useful soil nutrient ? Whereas if we see manure is not nutrient specific

Can some drugs be used to enhance the growth of adolescents?

Pick the odd one out of the following:

adrenaline / amylase / thyroxin / testosterone / oestrogen

What determines the XY combination of baby?

What are migratory birds ? Name one migratory bird which comes to warmer regions of India every year.

Choose the schematic diagram which properly represents pulmonary circulation in humans:

Name a natural balanced food for infants.

Q12. Consider the following statements with respect to Nipah Virus outbreak.

i. Urbanisation and deforestation can be a reason for the outbreak.

ii. Nipah Virus can be transmitted to the humans through pigs.ns

Which of the above statement/s is/are incorrect?

Which of the following is not a part of the human male reproductive system?

(a) testes

(b) oviducts

(c) seminal vesicles

(d) epididymis

Force responsible for the ascent of sap is

Capillary force

Root pressure

Transpirational pull

All of the these

Name two man-made causes of deforestation and two natural causes of deforestation.

Which agricultural practice comes first : harvesting or weeding ?

Which does not pertain to facilitated transport?

What is a test tube baby? What is parturition? [3 MARKS]

Define hormones and their role in our body? Why are they called chemical messengers [3 MARKS]

What will happen if:
(a) We go on cutting trees.
(b) The habitat of an animal is disturbed.
(c) The top layer of soil is exposed.
[5 MARKS]

Name the micro-organisms which fix nitrogen gas of the air into compunds of nitrogen ?

Inner lining of the uterine wall is called

What is the proper definition for winnowing?

Large areas of protected land for conservation of wildlife, plant and animal resources and traditional life of the tribals living in the area are called as:

The atomicity of ozone and ammonia are ___ and ___ respectively.

The following are the properties of plastids except -

An important ingredient of rava idlis and bhaturas is curd. Can you guess why?

Question 2 (a)
Differentiate between Wildlife sanctuary and biosphere reserve.

Choose the correct option for the underlined phrases.

The old cobbler fixed my shoes with a pair of scissors and few pins.

Some animals and plants typically belong to a particular area. The plant and animals found in particular area are termed ___ of that area.

Which of the following statements are correct regarding probiotics?

i.Probiotics are present in the intestine.
ii.Probiotics cause different diseases.
iii.Probiotics improve the immune system.
iv.Probiotics can be taken through food.

Match each earth resource with its principal industrial use.

Resource Use

A. Apatite 1. Abrasives.

B. Limestone 2. Cement

C. Clay minerals 3. Ceramics

D. Diamonds 4. Fertilizer

Assertion (A): Without variations, evolution is impossible.
Reason (R): Only useful variations are transmitted to the next generation.

Assertion: Mitochondria and chloroplast are semi-autonomous cells organelles.
Reason: Mitochondria and chloroplast have their own DNA and protein synthesizing machinery.

.............. is the process of gathering ripe crops from the fields

Which of the following animal is no longer found in Satpura National Park in Madhya Pradesh ?
(a) wild buffalo
(b) wild boar
(c) marsh crocodile
(d) wild dog

RBC is eukaryotic or prokaryotic?

_______________ is the basic structural unit of life.