BIOLOGY M.C.Q (1 Marks)

(d) Anti Diuretic hormone
Explanation: Anti Diuretic hormone or ADH is also called arginine vasopressin. It's a hormone made by the hypothalamus in the brain and stored in the posterior pituitary gland. It tells your kidneys how much water to conserve. ADH constantly regulates and balances the amount of water in your blood.

(c) Vital capacity
Explanation: Vital capacity is the maximum volume of air that a person can breathe in after forced expiration or the maximum volume of air that a person can breathe out after forced inspiration. 

(c) 6
Explanation: The pH of human urine is approximately 6.

(a) Pinus
Explanation: Roots in some genera of gymnosperms have a fungal association in the form of mycorrhizal (Pinus).

(c) 2
Explanation: There are two types of growth rates - Arithmetic and Geometric. In arithmetic growth rate, out of the two daughter cells produced by the mitotic division of a cell, only one daughter cell continues to divide while the other differentiates and matures.

(d) Oxygen
Explanation: By mass, oxygen is the most abundant element in the human body. most of the body consists of water or H₂O. Oxygen accounts for 61-65% of the mass of the human body. Even though there are many more atoms of hydrogen in your body than oxygen, each oxygen atom is 16 times more massive than a hydrogen atom.

(c) 1.0 to 1.2 litre
Explanation: Residual volume (RV) is about 1100 ml to 1200 ml which is the volume of air still remaining in the lungs after the expiratory reserve volume is exhaled.

(d) RBCs and few proteins
Explanation: The lymph is different from the blood. It is known as tissue fluid. Lymph is yellowish in colour as it lacks RBCs and few proteins. 

(d) Stromal thylakoids and non-appressed parts of granal thylakoids
Explanation: The pigment of Photosystem I occurs in stromal thylakoids and non-appressed parts of granal thylakoids. PS-I absorbs light of a wavelength of less than 780 nm.

(c) All tissues except epidermis and vascular tissue
Explanation: The ground tissue of plants includes all tissues that are neither dermal nor vascular. It can be divided into three classes based on the nature of the cell walls.

(b) Genus species
Explanation: Mangifera Indica. Here, Mangifera is a generic name while Indica is a specific name. Hence, the correct option is the Genus species.