What is the main function of xylem tissue in plants?
A) Transport of products of photosynthesis
B) Regulation of temperature
C) Transport of water and minerals obtained from the soil
D) Removal of excess water from the plant
Answer: C) Transport of water and minerals obtained from the soil
What is transpiration in plants?
A) The transport of soluble products of photosynthesis from leaves to other parts of the plant
B) The loss of water in the form of vapours from the aerial parts of the plant
C) The absorption and upward movement of water and minerals dissolved in it from roots to the leaves
D) The movement of material in the phloem to tissues with less pressure
Answer: B) The loss of water in the form of vapours from the aerial parts of the plant
Which tissue in plants is responsible for the transport of soluble products of photosynthesis from leaves to other parts of the plant?
A) Xylem tissue
B) Companion cells
C) Phloem tissue
D) Tracheids
Answer: C) Phloem tissue
Also Check – What are the Differences between the Transport of Materials in Xylem and Phloem
What is translocation in plants?
a) The process of creating energy in the plant cells
b) The process of transporting water to all parts of the plant
c) The process of transporting food produced by photosynthesis to all parts of the plant
d) The process of transporting oxygen to all parts of the plant
Answer: c) The process of transporting food produced by photosynthesis to all parts of the plant
Which of the following is a sink tissue in plants?
a) Leaves
b) Stems
c) Developing fruits
d) Tubers or bulbs
Answer: c) Developing fruits
Which specialized vascular tissue in plants transports organic compounds such as sugars, amino acids, and hormones from the sites of production to the sites of utilization or storage in other parts of the plant?
a) Xylem
b) Phloem
c) Parenchyma
d) Fibers
Answer: b) Phloem
What is the main conducting cell of phloem that forms the tube through which organic compounds are transported?
a) Sieve Tube Elements (STE)
b) Companion Cells (CC)
c) Phloem Parenchyma (PP)
d) Phloem Fibers
Answer: a) Sieve Tube Elements (STE)
Which hypothesis states that organic compounds are actively loaded into sieve tube elements in the source tissue, and a pressure gradient drives the flow of organic compounds from the source tissue to the sink tissue?
a) Symplastic Pathway
b) The Pressure flow Hypothesis
c) Photosynthesis Hypothesis
d) ATP Hypothesis
Answer: b) The Pressure flow Hypothesis
What are blood vessels?
A) Organs
B) Tissues
C) Hollow tubes
D) Muscles
Answer: C) Hollow tubes
What is the purpose of arteries?
A) To carry oxygenated blood away from the heart to the body’s tissues and organs
B) To carry impure or deoxygenated blood from all parts of the body back to the heart
C) To connect arteries and veins
D) None of the above
Answer: A) To carry oxygenated blood away from the heart to the body’s tissues and organs
Also Check – Why Do Arteries Have Thick Elastic Walls ?
Which type of blood vessel is responsible for regulating blood flow and blood pressure in the body?
A) Arteries
B) Veins
C) Capillaries
D) All of the above
Answer: C) Capillaries
Also Check – Capillaries – Definition, Location, Structure, Types, Functions and Importance
Which of the following blood vessels has one-way valves to prevent blood from flowing backward?
A) Arteries
B) Veins
C) Capillaries
D) None of the above
Answer: B) Veins
Also Check – Veins – Structure , functions ,Venous System and Circuits and Vein Valves
What is the function of blood vessels?
A) Transport of Nutrients and Oxygen
B) Removal of Waste Products
C) Regulation of Blood Pressure
D) All of the above
Answer: D) All of the above
Which of the following is NOT a type of artery?
A) Elastic arteries
B) Muscular arteries
C) Superficial arteries
D) None of the above
Answer: C) Superficial arteries
What is Double Circulation?
A) A circulatory system that consists of two separate loops of circulation through the body- Pulmonary Circulation and Systemic circulation.
B) A circulatory system that consists of one loop of circulation through the body.
C) A circulatory system that consists of two separate loops of circulation through the body- Pulmonary Circulation and Renal circulation.
Answer: A
Also Check – Difference between Double Circulation and Single Circulation
What is the main function of the circulatory system?
A) Transporting nutrients, gases, and waste products.
B) Maintaining balance of various physiological processes.
C) Both A and B
Answer: C
Also Check – How Lymph is Formed ?
What is the main difference between Open Circulatory Systems and Closed Circulatory Systems?
A) In Open Circulatory Systems, blood is enclosed within vessels, while in Closed Circulatory Systems, it is not always enclosed in vessels.
B) In Open Circulatory Systems, the circulatory fluid called hemolymph is pumped by a heart into a cavity called the hemocoel. From there, the fluid bathes the organs and tissues directly, while in Closed Circulatory Systems, blood is pumped by the heart through arteries, veins, and capillaries.
C) In Open Circulatory Systems, the circulatory fluid called hemolymph is pumped by the heart through arteries, veins, and capillaries, while in Closed Circulatory Systems, it is not always enclosed in vessels.
Answer: B
Also Check – Types of Veins and their Functions
What is the difference between Single Circulatory System and Double Circulatory System?
A) Single Circulatory System is found in mammals, birds, and reptiles, while Double Circulatory System is found in fish.
B) Single Circulatory System consists of two circuits of blood flow, one to the lungs (Pulmonary Circulation) and the other to the rest of the body (systemic circulation), while Double Circulatory System consists of a single circuit of blood flow, where the heart pumps blood through the gills, where oxygen is extracted, and then to the rest of the body.
C) Single Circulatory System consists of a single circuit of blood flow, where the heart pumps blood through the gills, where oxygen is extracted, and then to the rest of the body, while Double Circulatory System consists of two circuits of blood flow, one to the lungs (Pulmonary Circulation) and the other to the rest of the body (systemic circulation).
Answer: C
Also Check – 9 Important Functions of Blood Plasma
Also Check – 13 Important Functions of Heart
What is Pulmonary Circulation?
A) The movement of oxygen-rich blood from the heart to the body’s tissues and organs through the arteries, capillaries, and veins before returning deoxygenated blood back to the heart through the vena cava.
B) The circulation of deoxygenated blood from the heart to the lungs and back to the heart.
C) The circulation of oxygenated blood from the heart to the lungs and back to the heart.
Answer: B
Also Check – Arteries in The Body
What is Systemic Circulation?
A) The circulation of oxygenated blood from the heart to the lungs and back to the heart.
B) The movement of oxygen-rich blood from the heart to the body’s tissues and organs through the arteries, capillaries, and veins before returning deoxygenated blood back to the heart through the vena cava.
C) The movement of deoxygenated blood from the heart to the lungs and back to the heart.
Answer: B
Also Check – Why is it necessary to separate Oxygenated and Deoxygenated Blood
What is the main tissue responsible for the transportation of food in plants?
a) Xylem
b) Phloem
c) Parenchyma
d) Fibers
Answer: b) Phloem
Also Check – Functions of the Xylem and Phloem
Which cells are responsible for the transport of carbohydrates through the phloem?
a) Companion cells
b) Parenchyma cells
c) Sieve tube elements
d) Phloem fibers
Answer: c) Sieve tube elements
What is the function of ATP in the transport of food through phloem?
a) It produces energy for the synthesis of carbohydrates.
b) It allows water to enter the sieve tubes by osmosis.
c) It loads food into the sieve tubes.
d) It creates pressure in the phloem tissue.
Answer: c) It loads food into the sieve tubes.
How are hormones transported to different parts of the plant?
a) Through the xylem
b) Through the phloem
c) Through the companion cells
d) Through the fibers
Answer: b) Through the phloem
What is the importance of translocation of organic solutes in plants?
a) It provides energy for respiration.
b) It helps in the synthesis of carbohydrates.
c) It is necessary for the growth and development of all plant parts.
d) It allows for the transport of water from the roots to the leaves.
Answer: c) It is necessary for the growth and development of all plant parts.
Which type of animals have a three-chambered heart?
a) Reptiles
b) Birds
c) Mammals
d) Fishes
Answer: a) Reptiles
Which type of animals have a four-chambered heart?
a) Amphibians
b) Reptiles
c) Fishes
d) Birds and mammals
Answer: d) Birds and mammals
Which type of circulation is found in all animals with a four-chambered heart?
a) Single circulation
b) Pulmonary circulation
c) Systemic circulation
d) Double circulation
Answer: d) Double circulation
Which of the following statements is true about arteries?
a. They carry deoxygenated blood from the heart to organs
b. They have thin and collapsible walls
c. They carry fully oxygenated blood (except pulmonary artery) and nutrients
d. They are superficially located closer to the skin
Answer: c
Also Check – Arteries – Structure , Layers, Functions
Which blood vessel is closer to the surface of the body?
a. Artery
b. Vein
Answer: b
Also Check – Describe the Flow of Blood through the Heart of Human Beings
Which of the following is a characteristic of artery walls?
a. They are elastic
b. They have thin walls made up of two layers
c. They are thicker and highly muscular
d. They contain valves to prevent backflow of blood
Answer: c
Which blood vessel carries blood from the various parts of the body towards the heart?
a. Artery
b. Vein
Answer: b
Also Check – Composition Of Blood
Which of the following statements is true about the direction of blood flow in veins?
a. Veins carry blood away from the heart to various parts of the body
b. Veins carry deoxygenated blood from the heart to the body’s tissues and organs
c. Veins carry oxygenated blood from the body’s tissues and organs back to the heart
d. Veins carry blood from the various parts of the body towards the heart
Answer: d
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