Question

give general characteristics of kingdom algae? and discuss its mode of reproduction also ​

Answer 1

Answer:

Algae are either unicellular or multicellular in nature.

Found in moist places.

Mode of reproduction can be sexual as well as asexual.

Asexual reproduction occurs by spore formation.

Sexual reproduction occurs by the physical contact of haploid gametes.

Lacks a well-defined body.

Answer 2

Answer:

Division Thallophyta includes only Algae, presently.

General characters:-

• Algae are usually aquatic, either marine or fresh water.

• Plant body is thallus (without any differentiation into root, stem and leaves) which may be unicellular, colonial, filamentous, parenchymatous or pseudochymatous.

• Algae are covered by mucilage.

• Vascular or mechanical tissues are absent.

• Nutrition is photosynthetic with photosynthetic pigments - chlorophyll a , carotenes and xanthophylls.

• Embryo stage is absent.

• Its life cycle varies. It may be haplontic, diplontic or haplodiplontic.

Reproduction:-

• Vegetative and asexual modes of reproduction are abundant. Asexual spores are of two types, mitospores and meiospores.

• Sexual reproduction is present except in blue-green algae. Sex organs are nonjacketed and one celled called gametangia. It involves isogamy, anisogamy and oogamy in various groups.