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Test: Life Processes (Hard) - Class 10 MCQ


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20 Questions MCQ Test Extra Documents, Videos & Tests for Class 10 - Test: Life Processes (Hard)

Test: Life Processes (Hard) for Class 10 2024 is part of Extra Documents, Videos & Tests for Class 10 preparation. The Test: Life Processes (Hard) questions and answers have been prepared according to the Class 10 exam syllabus.The Test: Life Processes (Hard) MCQs are made for Class 10 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Life Processes (Hard) below.
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Test: Life Processes (Hard) - Question 1
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When the right ventricle of heart contracts, the blood goes to

Detailed Solution for Test: Life Processes (Hard) - Question 1
Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve. When the ventricle is full, the tricuspid valve shuts. This prevents blood from flowing backward into the atria while the ventricle contracts. As the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery, and to the lungs where it is oxygenated.
Test: Life Processes (Hard) - Question 2
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Due to its nature of_________,the blood is a connective tissue.

Detailed Solution for Test: Life Processes (Hard) - Question 2
Blood is considered a connective tissue because of its fluidity. The living cell types are red blood cells; called as erythrocytes, white blood cells; called leukocytes and platelets called thrombocytes. The fluid portion of whole blood, its matrix, is commonly called plasm(a)
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Test: Life Processes (Hard) - Question 3
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The salivary glands secrete

Detailed Solution for Test: Life Processes (Hard) - Question 3
Saliva contains salivary amylase (ptyalin) which helps in digestion of starch and lingual lipase secreted by von Ebner's gland breaks down triglycerides.
Test: Life Processes (Hard) - Question 4
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The process of expelling waste out of the body from an organism is called
Detailed Solution for Test: Life Processes (Hard) - Question 4
The process of expelling waste from the organism is called excretion. Ammonia, urea, and uric acid are the major forms of nitrogenous wastes excreted by the animals. Ammonia is the most toxic form and requires a large amount of water for its elimination, whereas uric acid, being the least toxic, can be removed with a minimum loss of water.

The human excretory system consists of a pair of kidneys, ureter, urinary bladder, and urethra. So, the correct answer is 'Excretion'.

Test: Life Processes (Hard) - Question 5
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The carbohydrates synthesized in the leaves are transported through sieve tubes most commonly in the form of
Detailed Solution for Test: Life Processes (Hard) - Question 5
Green plants synthesize sugars during the process of photosynthesis. The most commonly synthesized sugar is glucose. Glucose is converted to sucrose for transportation through sieve elements. Sucrose is converted to starch for long-term storage in fruits, seeds, and other vegetative parts.
Test: Life Processes (Hard) - Question 6
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The vein which brings clean blood from the lungs into the heart is known as:
Detailed Solution for Test: Life Processes (Hard) - Question 6
The pulmonary vein is responsible for bringing oxygenated and pure blood into the heart.
Test: Life Processes (Hard) - Question 7
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Movement of the synthesized products from the leaves to the roots and other parts of a plant’s body takes place through the phloem. This process is known as:
Detailed Solution for Test: Life Processes (Hard) - Question 7
The transport of soluble products of photosynthesis through all parts of the plant by specialized structures called phloem is translocation.
Test: Life Processes (Hard) - Question 8
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The process of diffusion of solvent particles from the region of less solute concentration to a region of high solute concentration through semi-permeable membrane is known as
Detailed Solution for Test: Life Processes (Hard) - Question 8
The diffusion of solvent particles from a region of less concentration to high concentration (concentration gradient) through a semi-permeable membrane is called osmosis.
Test: Life Processes (Hard) - Question 9
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Which among the following procedures is used for cleaning the blood of a person by separating the waste substance from it?
Detailed Solution for Test: Life Processes (Hard) - Question 9
Dialysis is the procedure of detoxifying the blood by isolating the waste and unwanted constituents in it.
Test: Life Processes (Hard) - Question 10
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The excretory unit of the human excretory system is known as:
Detailed Solution for Test: Life Processes (Hard) - Question 10

It is the nephron which is also the functional unit of the kidney and the excretory system of human beings.

It is also called the filtering and the excretory unit of the kidney which consists of the glomerulus and tubules.

This is an important part of the human body with an important function.

Test: Life Processes (Hard) - Question 11
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Plants use the energy stored in ATP to accomplish the process of transportation of:
Detailed Solution for Test: Life Processes (Hard) - Question 11
Translocation of food by phloem is achieved by utilizing energy from ATP.
Test: Life Processes (Hard) - Question 12
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Which among the following is necessary to carry out the blood coagulation in a cut or wound?
Detailed Solution for Test: Life Processes (Hard) - Question 12
Platelets coagulate blood whenever there is a cut or a wound. This stops excess flow of blood or hemorrhagic conditions.
Test: Life Processes (Hard) - Question 13
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Arteries and veins are connected by a network of extremely narrow tubes called:
Detailed Solution for Test: Life Processes (Hard) - Question 13
Blood capillaries are vessels that connect arteries and veins and help in blood circulation.
Test: Life Processes (Hard) - Question 14
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Arjun Appeared In-Class Test But He Confused To Know The Incorrect Statement. Would You Help Him To Know That?
Detailed Solution for Test: Life Processes (Hard) - Question 14
Chloroplast is the organelles in the cells of green plants which contain chlorophyll and where photosynthesis take place. Thus, photosynthesis occurs in the organelles called the chloroplast present in the photosynthetic cell or mesophyll cell of green plants. In the other words, the site of photosynthesis in cell of the leaf are chloroplast. Chloroplast can be seen easily by using a light microscope.
Test: Life Processes (Hard) - Question 15
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Which Of The Following Statement(S) Is (Are) Correct?
Detailed Solution for Test: Life Processes (Hard) - Question 15
Fermentation is a form of anaerobic respiration. Pyruvate can be converted into ethanol and CO, in yeast during fermentation. Since this process takes place in the absence of air (oxygen), it is called anaerobic respiration. It takes place in cytoplasm. Break down of pyruvate using oxygen, i.e., aerobic respiration takes place in the mitochondria.
Test: Life Processes (Hard) - Question 16
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The Internal (Cellular) Energy Reserve In Autotrophs Is
Detailed Solution for Test: Life Processes (Hard) - Question 16
Using the material in the form of carbon dioxide and water which is converted into carbohydrates in the presence of sunlight and chlorophyll. Carbohydrates are utilized for providing energy to the plant. The carbohydrates which are not used immediately are stored in the form of starch, which serves as the internal energy reserve to be used as and when required by the plant.
Test: Life Processes (Hard) - Question 17
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Which Is The First Enzyme To Mix With Food In The Digestive Tract?
Detailed Solution for Test: Life Processes (Hard) - Question 17
Digestion process starts from the mouth where salivary glands are present. Salivary glands produce amyloses. So, amylase is the first enzyme to mix with food. The saliva secreted by the salivary glands in mouth contains this enzyme that breaks down starch. Pepsin is a protein digesting enzyme secreted by the gastric glands present in the stomach wall. The pancreas secretes pancreatic juice in the small intestine. It contains enzymes like trypsin for digesting proteins. Cellulase is an enzyme complex which breaks down cellulose. Most animals, including humans (except ruminants) do not produce cellulase and are therefore unable to use most energy contained in plant material.
Test: Life Processes (Hard) - Question 18
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The Inner Lining Of Stomach Is Protected By One Of The Following From Hydrochloric Acid. Choose The Correct One
Detailed Solution for Test: Life Processes (Hard) - Question 18
The mucus is secreted in the gastric juice by the glands present in the stomach wall. It helps to protect the wall of stomach from its own secretions of hydrochloric acid. If mucus is not secreted, HCI will cause the erosion of inner lining of stomach leading to ulcer formation. Pepsin acts on proteins in the stomach. Salivary amylase is present in saliva, it acts on starch in the mouth. Bile helps in emulsification of fat in small intestine.
Test: Life Processes (Hard) - Question 19
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Choose The Correct Statement That Describes Arteries.
Detailed Solution for Test: Life Processes (Hard) - Question 19
Arteries are the vessels which carry blood away from the heart to various organs of the body. Since the blood emerges from the heart under high pressure, the arteries have thick, elastic walls. Veins collect the blood from different organs and bring it back to the heart. They do not thick walls because the blood is no longer under pressure, instead they have valves that ensure that the blood flows in only one direction.
Test: Life Processes (Hard) - Question 20
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Choose The Function Of The Pancreatic Juice From The Following
Detailed Solution for Test: Life Processes (Hard) - Question 20
Pancreas secretes pancreatic juice which contain following: Digestive enzymes amylases, lipases, trypsin. Amylase breaks down the starch, trypsin digests the proteins, and lipase breaks down the emulsified fats.
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