What Is Gymnosperm Seed?
Gymnosperms are the seed-producing plants, but as opposed to angiosperms, they produce seeds without fruits. These plants develop on the... View Article
Gymnosperms are the seed-producing plants, but as opposed to angiosperms, they produce seeds without fruits. These plants develop on the... View Article
Listed below are few characteristics of gymnosperms – Inhabit colder regions where snow falls Naked seeds are formed in the... View Article
Bryophytes are small as they are restricted in size due to poor transportation means for gases, water and other nutrients.... View Article
Mosses are primitive, small and non-vascular structures in which the conductive tissues are absent in most of them which is... View Article
Typically, Riccia inhabits shady places and damp areas and other similar terrestrial habitats. Scales are violet coloured, multicellular, and single-cell... View Article
A form of sexual reproduction involving gametes having similar morphology (typically same in size and shape) is isogamy. These female... View Article
Zygotes are diploid cells in the complete cycle. The process of mitosis only takes place in the haploid phase. The... View Article
(a) smaller but to have larger sex organs (b) smaller and to have smaller sex organs (c) larger and to... View Article
(a) motile sperms (b) seeds (c) vessels (d) cambium Answer: (a) motile sperms Explanation – Adiantum is a pteridophyte while... View Article
(a) fungi (b) ferns (c) algae (d) mosses Answer: (c) algae Explanation – The process of permanent and complete fusion... View Article
(a) Fucus (b) Chlamydomonas (c) Volvox (d) Spirogyra Answer: (d) Spirogyra Explanation – Spirogyra comprise isogamous gametes (similar in size),... View Article
(a) Riccia (b) Sphagnum (c) Funaria (d) Marchantia Answer: (b) Sphagnum Explanation – Sphagnum is also known as peat moss... View Article
(a) Ectocarpus (b) Anabaena (c) Spirogyra (d) Polysiphonia Answer: (a) Ectocarpus Explanation – Gametes produced by Ectocarpus are biflagellated. In... View Article
(a) Marchantia (b) Funaria (c) Pinus (d) Pteris Answer: (c) Pinus Explanation – The existence of male and female gametophytes... View Article
(a) wind (b) insects (c) birds (d) water Answer: (d) water Explanation – The sperms of both bryophytes and pteridophytes... View Article
(a) thick cuticle (b) presence of vessels (c) broad hardy leaves (d) superficial stomata Answer: (a) thick cuticle Explanation –... View Article
(a) Salvinia – Heterosporous (b) Pinus – Dioecious (c) Cycas – Dioecious (d) Equisetum – Homosporous Answer: (b) Pinus –... View Article
The Avena coleoptile test is a bioassay for examining the activity of auxin-type growth regulators. It was set up by... View Article
Cytokinins are phytohormones that promote cytokinesis, cell division in plant shoots and roots. They participate in cell differentiation and growth... View Article
The chemical name of auxin is indole-3-acetic acid (IAA). The term ‘auxin’ was derived from ‘auxein’, the Greek word which... View Article