In Phaeophyceae, the food is stored in the form of:
Food is stored as complex carbohydrates, which may be in the form of laminarin or mannitol.
The algae that secretes and deposit calcium carbonate over their walls to contribute in producing coral reefs is:
Red algae secretes and deposits calcium carbonate over their wall to contribute in producing coral reefs in sea water.
Cycas is a gymnosperm as it has:
All gymnosperms have naked seeds. Since, Cycas has naked seeds, it belongs to gymnosperms.
Liverworts are closely related to:
The bryophytes are divided into liverworts and mosses. So they closely related to each other.
All seed bearing plant, alternation of generation is:
In diplontic life cycle, most of the part of life cycle are diploid (2n) and only gametes is haploid (n). All seed bearing plants, alternation of generation is Diplontic and plant body is diploid.
Kelps is obtained from?
Kelps are marine algae of class phaeophyceae. The body of kelp may be upto 100 meter long. They vary in colour from olive green to various shades of brown depending upon xanthophyll pigments.
Identify the algae present in the figure:
The algae present in figure is Chlamydomonas which is a unicellular algae present in fresh water. Two flagella is attached to it that help in moving in water.
In which pteridophytes, heterosporous is produced?
Genera like Selaginella and Salvinia which produce two kinds of spores, macro (large) and micro (small) spores are known as heterosporous.
Apophysis of moss is:
In mosses, the lower part of capsule is called as apophysis. The main function of apophysis in capsule is to provide protection and help in dehiscence of mature capsule.
The sperms of ______ are largest in the biological world.
The sperms or male gamete of Cycas are the largest in the biological world. It is top shaped, multinucleate structure.
An algae having ribbon shaped chloroplast is:
The chloroplasts may be spiral or ribbon-shaped in spirogyra.
Which of the following includes a diploid structure?
Choose the odd one out among the following: Dryopteris, Pteris, Adiantum, Selaginella.
Selaginella belong to Pteridophyta of class Lycopsida and other plants belong to class Pteropsida.
Meiosis occurs in:
A meiocyte is a type of cell that differentiates into a gamete through the process of meiosis. Through meiosis, the diploid meiocyte divides into four genetically different haploid gametes. The control of the meiocyte through the meiotic cell cycle varies between different groups of organisms.
Haplontic life cycle is seen in:
Haplontic life cycle generally occurs in most algae such as volvox, Spirogyra and some species of Chlamydomonas.
Laminaria and Fucus belong to:
The common forms of Brown algae or Phaeophyceae are Ectocarpus, Dictyota, Laminaria, Sargassum and Fucus.
On germination, moss spore produce:
The spore of moss germinate to produce protonema, which is a green structure on which male and female gametophytes develops to produce male and female gametes respectively.
The giant redwood tree is:
One of the gymnosperms, the giant redwood tree Sequoia is one of the tallest tree species.
A vascular cryptogam is:
Cryptic Organisms includes plants without reproductive organs, flower visible. Most of cryptogamous lacks vascular bundles xylem and phloem but some member of pteridophytes like Equisetum contain vascular bundle.
Thallus of Riccia is
A dominant, independent, photosynthetic, thalloid or erect phase of Bryophytes and pteridophytes is represented by a haploid gametophyte.
Angiosperm: roots :: Phaeophyceae:
The plant body of phaeophyceae is usually attached to the substratum by a holdfast whereas the angiosperms attach to the substratum by roots.
Asexual reproduction in liverworts a specialised structures are called as
The formation of specialised structures called gemmae (sing. gemma). Gemmae are green, multicellular, asexual buds, which develop in small receptacles called gemma cups located on the thalli. The gemmae become detached from the parent body and germinate to form new individuals.
Which among the following belong to Sphenopsida?
Equisetum of Pteridophyta belong to class Sphenopsida.
Cyanobacteria are classified under
Pteridophytes differ from mosses/ bryophytes in possessing