Practice free Zoology NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Interferon is conneted with:-
(b)
Interferons are a group of signaling proteins made and released by host cells in response to the presence of several viruses
Measles is a disease which belongs to the category of:
(b) It is a fact.
Measles is an acute systemic viral infection with fever, respiratory involvement and symptoms, and a rash. Measles can cause serious complications and even fatalities. Infection confers lifelong immunity. Measles is highly contagious and vaccine-preventable.
Heroin is a derivative of:
(b) Heroin is acyl derivative of morphine.
Heroin is an opioid drug made from morphine, a natural substance taken from the seed pod of the various opium poppy plants grown in Southeast and Southwest Asia, Mexico, and Colombia. Heroin can be a white or brown powder, or a black sticky substance known as black tar heroin. Other common names for heroin include big H, horse, hell dust,and smack.
Heroin enters the brain rapidly and binds to opioid receptors on cells located in many areas, especially those involved in feelings of pain and pleasure and in controlling heart rate, sleeping, and breathing.
Cocaine is:
(c) It (C17H21O4N) s an alkaloid, a local anaesthetic but dangerous habit forming drug.
An attribute found in plants but not animals is
Plants are autotrophs. Animals are not.
Also some simple animals reproduce by asexual reproduction so that option (4) can't be right, because asexual reproduction found in both simple animals & plants . (NCERT, Chapter: "Reproduction In Organisms" , Page No. 5)
Consider the following two statements:
I. In the single-celled organisms, we are not very clear about the usage of the two terms – growth and reproduction.
II. When it comes to unicellular organisms like bacteria, unicellular algae or amoeba, reproduction is synonymous with growth, i.e., increase in number of cells.
Cell division leads to growth in multicelluular organisms, in unicellular organisms it leads to both (growth & reproduction).
The most obvious & complicated feature of all living organisms is:
The most obvious and complicated feature of all living organisms is their ability to sense their surroundings or environment and respond to these environmental stimuli. This ability to perceive and respond to external stimuli is a fundamental characteristic of life.
The earliest system of classification does not include which of the following features?
Page number-29
Introduction
Plant Kingdom
The classification given by Linnaeus was depending on
Page number-29
Introduction
Plant Kingdom
What is the artificial basis of classification?
Page number-29
Introduction
Plant Kingdom
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