Prepare for NEET Biology Plant Kingdom with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert solutions to understand plant diversity and groups.
The elaters of liverworts and the peristome teeth of mosses both contribute to:
Water absorption
Spore dispersal
Gamete production
Anchoring the plant
In bryophytes, the phenomenon of 'matrotrophy' refers to:
Asexual reproduction through gemmae
Symbiotic association with fungi
Nourishment of the sporophyte by the gametophyte
Water transport through capillary action
Which feature distinguishes the sporophyte of Anthoceros from those of other bryophytes?
Complete dependence on the gametophyte
Presence of a foot, seta, and capsule
Presence of a basal meristem and indeterminate growth
Lack of stomata
Which of the following is the dominant photosynthetic phase in the life cycle of Funaria?
Sporophyte
Gametophyte
Protonema
Both sporophyte and gametophyte equally
The development of the sporophyte without fertilization from the gametophytic tissue in some pteridophytes like Dryopteris is known as:
Apospory
Parthenogenesis
Apomixis
Apogamy
Which unique characteristic distinguishes the Selaginella stem anatomy from other pteridophytes?
Siphonostele
Protostele
Presence of trabeculae
Dictyostele
In heterosporous pteridophytes, the development of the male gametophyte predominantly occurs:
Within the megaspore wall
Outside the spore wall
Partially inside and outside the spore wall
Within the microspore wall
The suspensor in Selaginella plays a crucial role in:
Anchoring the gametophyte to the substrate
Protecting the developing sporophyte
Facilitating spore dispersal
Pushing the developing embryo into the nutritive tissue of the female gametophyte
Which of these characteristics is NOT associated with the evolution of heterospory in pteridophytes?
Reduction in the number of megaspores
Increased protection of the female gametophyte
Development of endosporic gametophytes
Increased dependence on water for fertilization
Explain the role of the annulus in fern sporangia, contrasting its function with the role of elaters in liverworts.
Both annulus and elaters aid in nutrient absorption.
The annulus protects the developing spores, while elaters facilitate fertilization.
The annulus aids in spore dispersal in ferns by a spring-like mechanism, while elaters in liverworts are hygroscopic and facilitate spore dispersal by changing shape with humidity.
Both annulus and elaters are involved in anchoring the plant to the substrate.
