81. Name the organs which have different basic structure but have similar appearance and perform similar functions.
[A] Analogous organs
[B] Homologous organs
[C] Both A and B
[D] Neither A nor B
Show Answer
Correct Answer: A [Analogous organs]
Notes:
Analogous organs have different basic structure but have similar appearance and perform similar functions. Example wings of an insect and a bird have different structures but similar functions.
82. Which spice consists of the seed of the Myristica fragrans, a tropical evergreen tree?
[A] Cardamom
[B] Clove
[C] Nutmeg
[D] Turmeric
Show Answer
Correct Answer: C [Nutmeg]
Notes:
Nutmeg is a dark-leaved evergreen tree cultivated for two spices derived from its fruit: nutmeg, from its seed, and mace, from the seed covering. Although used in traditional medicine for treating various disorders, nutmeg has no known medicinal value.
83. Which of the following cells are closely associated and interacting with guard cells?
[A] Transfusion tissue
[B] Complementary cells
[C] Subsidiary cells
[D] Hypodermal cells
Show Answer
Correct Answer: C [Subsidiary cells]
Notes:
Subsidiary cells are the accessory cells to guard cells in the epidermis of plants. Two or four subsidiary cells are found surrounding the pair of guard cells. Subsidiary cells do not consist of chloroplasts. They provide support for the functioning of guard cells in the epidermis.
84. Auxiliary bud develops into which of the following parts of the plant?
[A] Fruit
[B] Leaf
[C] Roots
[D] Branch
Show Answer
Correct Answer: D [Branch]
Notes:
The axillary bud is a bud that develops in the axil of a leaf of a plant (synonymous with lateral bud). Axillary buds develop from the nodes which then becomes a new stem.
85. Xylem helps in transportation of which of the following?
[A] Food
[B] Water
[C] Both food and water
[D] Nutrients
Show Answer
Correct Answer: B [Water]
Notes:
Xylem is a type of tissue in vascular plants that transports water and some nutrients from the roots to the leaves. Water is passively transported into the roots and then into the xylem. The forces of cohesion and adhesion cause the water molecules to form a column in the xylem.
86. Which organ has finger like outgrowths which are called as villi (Singular Villus)?
[A] Bladder
[B] Stomach
[C] Small Intestine
[D] Large Intestine
Show Answer
Correct Answer: C [Small Intestine]
Notes:
The internal walls of the small intestine are covered in finger-like tissue called villi. Each of these villi is covered in even smaller finger-like structures called microvilli. These villi and microvilli increase the surface area available for the absorption of nutrients.
87. Nephron is related to which of the following system of human body?
[A] Excretory System
[B] Circulatory system
[C] Reproductive System
[D] Respiratory system
Show Answer
Correct Answer: A [Excretory System]
Notes:
Excretory system consists of specialized structures and capillary networks that assist in the excretory process. The human excretory system includes the kidneys and their functional unit, the nephron.
88. Which Vitamin is obtained from Sun rays?
[A] Vitamin C
[B] Vitamin D
[C] Vitamin K
[D] Vitamin A
Show Answer
Correct Answer: B [Vitamin D]
Notes:
Human skin can make large amounts of vitamin D when lots of skin is exposed and the sun is high in the sky. Your body is designed to get the vitamin D it needs by producing it when your bare skin is exposed to sunlight.
89. Cinnamon is obtained from which part of the plant?
[A] Fruits
[B] Stem
[C] Bark
[D] Roots
Show Answer
Correct Answer: C [Bark]
Notes:
Cinnamon is a spice obtained from the inner bark of several tree species from the genus Cinnamomum. The term “cinnamon” also is used to describe its mid-brown colour.
90. Which among the following carries impure blood to human heart?
[A] Pulmonary vein
[B] Vena Cava
[C] Aorta
[D] Pulmonary arteries
Show Answer
Correct Answer: D [Pulmonary arteries]
Notes:
The pulmonary artery carries impure blood to the right and left lungs. The left half of the heart collects and pumps pure (oxygenated) blood from the lungs to all parts of the body.
