Biology Quiz 3

The plant life in an ecosystem supports animal life and vice versa. Mangroves are a group of trees and shrubs that live in the coastal intertidal zone. Thus the correct sequence of ecosystem in the order of decreasing productivity is Ocean, mangroves, lakes and grasslands.

To measure blood pressure, doctor uses an instrument called a sphygmomanometer, which is more often referred to as a blood pressure cuff.

Thyroid gland is the largest endocrine gland of our body. It is located in the front of the neck, wrapped around the windpipe (trachea). It plays a major role in the metabolism, growth and development of the human body.

A biopsy test is typically associated with the diagnosis of cancer. Doctors use biopsies to test whether abnormalities in the body are caused by cancer or by other conditions.

Outside the nucleus, DNA is found in Mitochondria. Most DNA is located in the cell nucleus (where it is called nucleus DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA).

Chewing gum is made from Latex. It is a sweetened, flavoured confection composed primarily of latex, both natural and artificial. Organic latex, a milky white fluid produced by a variety of seed plants, is best known as the principal component of rubber.

Animal protein is called first-class protein because it is rich in essential amino acids. It is superior to plant protein because animal proteins contain a broad spectrum of amino acids with more vitamins and minerals than plant proteins.

The world's smallest flowering plant is the watermeal, or Wolffia globosa.

The adult human brain weighs about 1200–1400 gm which is about 2% of the total body weight. The weight of an average human brain is about 1.36 kg.

The immunity caused by the B-lymphocytes is called Humoral Immunity. Humoral immunity is the process of adaptive immunity manifested by the production of antibodies by B-lymphocytes. It develops in bone marrow.