Practice free Botany NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Polyembryony in Citrus and Mango is described to arise from which part of the ovule?
The text states: 'In many Citrus and Mango varieties some of the nucellar cells surrounding the embryo sac start dividing, protrude into the embryo sac and develop into the embryos.'
The production of seeds without fertilization is known as:
The NCERT text clearly defines apomixis as the 'special mechanism, to produce seeds without fertilisation'.
If a diploid egg cell develops into an embryo without fertilization, this phenomenon is a characteristic of:
The text describes one way apomictic seeds develop: 'In some species, the diploid egg cell is formed without reduction division and develops into the embryo without fertilisation.' While parthenogenesis is a broader term for development from an unfertilized egg, in the context of seed formation in flowering plants as described, apomixis is the more specific and accurate answer.
Which of the following plant families are explicitly mentioned in the text as exhibiting apomixis?
The text states: 'a few flowering plants such as some species of Asteraceae and grasses, have evolved a special mechanism, to produce seeds without fertilisation, called apomixis.'
Observe seeds of orange and squeeze them. You might find many embryos of different sizes and shapes. This phenomenon is an example of:
The text instructs: 'Take out some seeds of orange and squeeze them. Observe the many embryos of different sizes and shapes from each seed. Count the number of embryos. Occurrence of more than one embryo in a seed is referred to as polyembryony.'
What is the primary difference between typical sexual reproduction and apomixis concerning seed formation?
The text clearly states, 'Although seeds, in general are the products of fertilisation, a few flowering plants... have evolved a special mechanism, to produce seeds without fertilisation, called apomixis.' This highlights the absence of fertilization as the key distinction.
Which of the following describes an interaction where one species benefits and the other is neither harmed nor benefited?
As per the NCERT text, 'Commensalism: This is the interaction in which one species benefits and the other is neither harmed nor benefited.' Examples include an orchid on a mango branch or cattle egrets and grazing cattle.
An intimate mutualistic relationship exists between a fungus and photosynthesising algae or cyanobacteria. This association is famously known as:
The NCERT states, 'Lichens represent an intimate mutualistic relationship between a fungus and photosynthesising algae or cyanobacteria.'
Which of the following interactions is characterized by both interacting species deriving benefits?
The NCERT text explicitly states, 'This interaction confers benefits on both the interacting species' when describing Mutualism.
The interaction between sea anemone and clown fish, where the fish gets protection from predators by living among stinging tentacles, while the anemone appears unaffected, is an example of:
According to NCERT, 'Another example of commensalism is the interaction between sea anemone that has stinging tentacles and the clown fish that lives among them. The fish gets protection from predators... The anemone does not appear to derive any benefit by hosting the clown fish.'
Ready to ace NEET?
Free access · No credit card required
Yes. You can attempt every Botany 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.