Q. Structure of a sporophyte consists of a foot, seta and

View solution

Q. In atternation of generations, a haploid spermatozoid fuses with a haploid egg to produce diploid

View solution

Q. Around 15-20 million years is time, for evolution of a

View solution

Q. Sporophyte is dominant and gametophyte is small and reduced but separate as well as independent. This development shows heteromorphic alternation of generation

View solution

Q. Important well known ferns are Dryopteris, Pteries Pteridium and

View solution

Q. Horneophyton, psilophyto and cooksonia belong to Tracheophytes group called

View solution

Q. Leaf of a lycopodium is small and contains single undivided vascular supply, such leaf is called

View solution

Q. Male gamates reach to embryo sac by help of

View solution

Q. Branches of Crataegus give an excellent wood, which can be used to make

View solution

Q. Class of angiosperm which contain two cotyledon are called

View solution

Q. Pine is a

View solution

Q. A less conspicuous generation which partially or completely depend upon gametophyte for its nutrition is a

View solution

Q. Species of Mimosaceae which help breaking wind pressure are

View solution

Q. Unequal branches of stem which grew unequally at different rates given rise to different planes, this development is

View solution

Q. Fruit is developed from ovary wall and

View solution

Q. A seed may be defined as a fertilized

View solution

Q. Most successful group of seed plants are

View solution

Q. Sporophytes which are differentiated into roots, stem and true leaves, constitute plants of

View solution

Q. Atropa Belladona is used for medicine because it is rich in

View solution

Q. Secondary growth in plant, girth due to

View solution