Practice free Organism and Population (Botany) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Which of the following is a characteristic shared by predation, parasitism, and commensalism?
The NCERT text explicitly states: 'Predation, parasitism and commensalism share a common characteristic– the interacting species live closely together.'
Brood parasitism is exemplified by which of the following interactions?
The NCERT text describes: 'Brood parasitism in birds is a fascinating example of parasitism in which the parasitic bird lays its eggs in the nest of its host and lets the host incubate them.'
Which statement best explains the evolutionary adaptation of parasitic bird eggs in brood parasitism?
The NCERT text states: 'During the course of evolution, the eggs of the parasitic bird have evolved to resemble the host’s egg in size and colour to reduce the chances of the host bird detecting the foreign eggs and ejecting them from the nest.'
Cuscuta is an example of a plant parasite. What is a key feature that allows it to be parasitic?
The NCERT text describes Cuscuta as having 'lost its chlorophyll and leaves in the course of evolution. It derives its nutrition from the host plant which it parasitises.'
Which disease is caused by the notorious malarial parasite, Plasmodium, described as having an infectious spore-like stage in its life cycle?
Under 'Sporozoans', the NCERT text states: 'The most notorious is Plasmodium (malarial parasite) which causes malaria, a disease which has a staggering effect on human population.'
Which category of protozoan includes parasitic forms that cause diseases like sleeping sickness?
The NCERT text mentions: 'Flagellated protozoans: The members of this group are either free-living or parasitic. They have flagella. The parasitic forms cause diaseases such as sleeping sickness. Example: Trypanosoma.'
White spots seen on mustard leaves are due to a parasitic organism belonging to which kingdom?
The NCERT text under 'Kingdom Fungi' states: 'White spots seen on mustard leaves are due to a parasitic fungus.'
Entamoeba, an amoeboid protozoan, is described as having what type of interaction with humans?
Under 'Amoeboid protozoans', the NCERT states: 'Some of them such as Entamoeba are parasites.'
Which of the following describes organisms that breed only once in their lifetime and produce a large number of small-sized offspring?
The NCERT text states: 'Some organisms breed only once in their lifetime (Pacific salmon fish, bamboo) while others breed many times during their lifetime (most birds and mammals). Some produce a large number of small-sized offspring (Oysters, pelagic fishes) while others produce a small number of large-sized offspring (birds, mammals).' Option 3 correctly groups organisms that produce a large number of small-sized offspring.
The concept of 'Darwinian fitness' in the context of life history variations refers to:
The NCERT text explicitly states: 'Populations evolve to maximise their reproductive fitness, also called Darwinian fitness (high r value), in the habitat in which they live.'
Ready to ace NEET?
Free access · No credit card required
Yes. You can attempt every Organism and Population question on this page for free without logging in, and check the correct answer with a detailed explanation instantly.
No account is required to attempt questions and view answers. A free account adds bookmarks, personal notes, and progress tracking.
The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.