Prepare for NEET with Botany-specific practice questions. Covering all major Botany chapters, this is perfect for your NEET Biology needs.
The suspensor in a developing dicot embryo plays a critical role in:
Protecting the embryo from pathogens and environmental stress
Synthesizing growth hormones and regulating embryo development
Forming the root apical meristem and initiating root development
Pushing the embryo into the endosperm and facilitating nutrient absorption
The development of the suspensor in Selaginella is attributed to which part of the embryo?
Epibasal tier
Hypobasal tier
Both epibasal and hypobasal tiers
The megaspore itself
The development of the zygote into a young embryo within the female gametophyte is a characteristic of:
Seed plants
Seedless vascular plants
Bryophytes
Green algae
A unique feature of angiosperm embryogenesis is the formation of a suspensor. Which statement regarding the suspensor is INCORRECT?
It connects the developing embryo to the maternal tissues.
It provides a conduit for nutrients and growth regulators.
It pushes the embryo into the endosperm.
It undergoes extensive cell divisions to form the embryo proper.
In a rare genetic mutation in a dicot plant, the formation of the hypophysis is inhibited. What would be the MOST likely direct consequence of this mutation?
Failure of endosperm development
Impaired radicle development
Absence of cotyledons
Delayed fruit ripening
Which of the following statements BEST explains why double fertilization is advantageous for angiosperms?
It ensures the formation of a triploid endosperm, which is more resistant to pathogens.
It allows for the production of both seeds and fruits, enhancing dispersal.
It synchronizes endosperm development with embryo development, preventing wasted resources if fertilization fails.
It eliminates the need for separate male and female gametophytes.
Immature embryos can cause a type of dormancy known as:
Physical dormancy
Morphological dormancy
Physiological dormancy
Chemical dormancy
During germination of a maize seed, which structure facilitates the transfer of nutrients to the developing embryo?
Epicotyl
Hypocotyl
Scutellum
Coleoptile
From an evolutionary perspective, the retention of the female gametophyte with a developing young embryo on the parent sporophyte offers what primary advantage?
Enhanced embryo protection and nutrition
Increased spore dispersal efficiency
Improved gamete fusion rates
Reduced dependence on water for fertilization
In which plant group is the retention of the female gametophyte with the developing embryo on the parent sporophyte first observed as a significant evolutionary step?
Bryophytes
Heterosporous vascular plants
Gymnosperms
Green algae
