CURIOUSITY QUIZ: LIFE PROCESSES

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Test Your knowledge on the topic 'Life Processes' prepared exclusively according to the NCERT science curriculum for Class-10 . Attempt all the questions by clicking on the right option. Submit the completed Form by clicking the 'Submit' button at the end of the Form. Get your Score and the correct Answer by clicking the 'View score' button. Good Luck!

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What is responsible for the closing and opening of the Stomatal pores present in the leaves of plants to allow exchange of gases and water vapour with the surroundings?

1 point

Epidermal cells

Xylem

Guard Cells

Subsidiary cells

Clear selection

It is a polysaccharide that serves as a main storage form of glucose ( and hence energy) in the human body :

1 point

Fatty acids

ATP

Glycogen

Pyruvates

Clear selection

The unicellular organism Paramoecium used to ingest its food by moving the foods to specific spots of its body by the action of these organs that cover the entire surface of the cell:

1 point

Pellicle

Pseudopodia

Cilia

Contractile Vacuoles

Clear selection

What is the enzyme present in the Saliva of humans?

1 point

Ptyalin

Salivary Amylase

Alpha Amylase

All the above answers are correct.

Clear selection

The lining of the Alimentary canal has muscles that contract rhythmically to push the food forward through the gut. This action is commonly known as:

1 point

Stomach contraction

Gut movement

Peristalsis

GI tract motility

Clear selection

Our Stomach used to secrete a strong acid named :

What is its key function ?

Why doesn't this acid harm the inner linings of the stomach itself under normal conditions?

1 point

Fatty Acids; It activates the enzyme Pepsin to function; The Stomach is protected by a lining of mucous.

Hydrochloric Acid; It activates the enzyme Pepsin to function; The Stomach is protected by a lining of epithelial cells.

Hydrochloric Acid; It activates the enzyme Lipase to function; The Stomach is protected by a lining of mucous.

Hydrochloric Acid; It activates the enzyme Pepsin to function; The Stomach is protected by a lining of mucous.

Clear selection

Although the Small intestine is narrower than the large intestine, it is actually the longest section of your digestive tube. What is the length of the small intestine in humans?

1 point

5 meters

6 meters

7 meters

10 meters

Clear selection

Which of the following organisms exhibit Anaerobic respiration (respiration that takes place in the absence of Oxygen)?

1 point

Earthworm

Fungi

Yeast

Octopus

Clear selection

Cellular respiration in which cell organelle of humans involves breaking down of Pyruvates in the presence of Oxygen to release energy?

1 point

Golgi Bodies

Mitochondria

Ribosome

Endoplasmic Reticulum

Clear selection

ATP is called the Energy Currency of most cellular processes. How much energy equivalent is released by one ATP molecule when its terminal Phosphate linkage is broken down by water?

1 point

30.5 kcal/mol

7.3 kJ/mol

30.5 kJ/mol

20.5 kJ/mol

Clear selection

It is a colourless fluid consisting of mostly White Blood Cells that circulates throughout the body and acts as a filter against microbes, organic wastes, toxins and other debris of the body:

1 point

Plasma

Blood

Lymph

Body fluid

Clear selection

This constitutes nearly 55% of our blood, and provides a liquid medium for the remaining 45% of materials like red blood cells, white blood cells and platelets to suspend in it :

1 point

Plasma

Lymph

Serum

Cytoplasm

Clear selection

What causes water from the soil to move up in the plants through xylems in daytime?

1 point

Photosynthesis

Cellular Respiration

Transpiration pull

Osmotic Pressure

Clear selection

A mechanism found in higher animals in which blood circulation takes place in separate pathways (that are connected to the heart through which oxygenated and deoxygenated blood flows) preventing the oxygenated and deoxygenated bloods from getting mixed up :

1 point

Single Circulation

Double Circulation

Triple Circulation

Twin Circulation

Clear selection

What physical factor causes the transport of food materials (like Sucrose) to different parts of the plants through Phloem tissues?

1 point

Transpiration Pull

Osmotic Pressure

Diffusion

Gravity

Clear selection

This is a cup-like sac at the beginning of the tubular component of a Nephron ( basic filtration unit of the kidney) in a mammalian kidney that performs the first step in the filtration of blood to form urine:

1 point

Cortical Blood Vessels

Ureter

Urinary Bladder

Bowman's Capsule

Clear selection

Which enzyme is activated in our digestive system by the secretion of hydrochloric acid in the stomach that help in proteins digestion without harming the walls of the stomach ?

1 point

Pepsin

Amylase

Lipase

Protease

Clear selection

Mark your response on the basis of the Assertion and Reasoning given below:

Assertion : When dilute Iodine solution is added to the variegated leaf having green and white patches of a potted plant (like Crotons) after it is treated with boiled water mixed with alcohol, some parts of the leaf surface changed to blue colour.

Reason : Only the green parts of the plant leaves that contain chlorophyll pigments changed to blue colour on treatment with Iodine as formation of Starch takes place only there due to the photosynthesis.

1 point

Assertion is correct; but the Reasoning is not correct.

Assertion is wrong and the Reasoning is also wrong.

Assertion is correct; the Reasoning is also correct and the Reasoning is not the correct explanation of the Assertion.

Assertion is correct; the Reasoning is also correct and the Reasoning is the correct explanation of the Assertion.

Clear selection

Mark your response on the basis of the Assertion and Reasoning given below:

Assertion : It takes less time to turn freshly prepared lime water to milky with air passed from mouth than the case when air is passed from a syringe.

Reason : Our exhalation breath contains more Oxygen than the air present in a Syringe.

1 point

Assertion is correct; but the Reasoning is not correct.

Assertion is wrong and the Reasoning is also wrong.

Assertion is correct; the Reasoning is also correct and the Reasoning is not the correct explanation of the Assertion.

Assertion is correct; the Reasoning is also correct and the Reasoning is the correct explanation of the Assertion.

Clear selection

Mark your response on the basis of the Assertion and Reasoning given below:

Assertion : When an Iodine test is conducted with a starch solution mixed with human saliva taken in a test tube, the colour did not change to blue like normal starch tests.

Reason : The digestive enzyme present in the saliva breaks down the starch present in the test tube into simple sugars.

1 point

Assertion is correct; but the Reasoning is not correct.

Assertion is wrong and the Reasoning is also wrong.

Assertion is correct; the Reasoning is also correct and the Reasoning is not the correct explanation of the Assertion.

Assertion is correct; the Reasoning is also correct and the Reasoning is the correct explanation of the Assertion.

Clear selection

Mark your response on the basis of the Assertion and Reasoning given below:

Assertion : Digested food is very efficiently absorbed by the inner walls of the Small Intestine into the blood stream.

Reason : The inner walls of the Small Intestine is having a number of specialized tissues for absorption.

1 point

Assertion is correct; but the Reasoning is neither correct nor the correct explanation of the Assertion. Rather the Reasoning should mention the finger like projection called villi present in the inner walls of the Small Intestine that increase the surface area of absorption.

Assertion is wrong and the Reasoning is also wrong.

Assertion is wrong; the Reasoning is correct .

Assertion is correct; the Reasoning is also correct and the Reasoning is the correct explanation of the Assertion.

Clear selection

Our trachea is made up of many C shaped rings that holds them in place when there is less air in it and prevent the walls of the trachea from collapsing. Of what tissue ,these rings are made of ?

1 point

Tendons

Cartilage

Ligament

Adipose tissue

Clear selection

The upperpart of our respiratory tract is provided with small hair like structures that is used to remove harmful substances like dusts and germs. What are these hair like structures called ?

1 point

Cilia

Capillaries

Fine hair

Flagella

Clear selection

What is the other name of Leucocytes ?

1 point

Red Blood Cells

White Blood Cells

Platelets

Lymph

Clear selection

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