Write the characteristics of sub Kingdom phanerogam
Answers
Answer:
Explanation:
(A) The characteristics of subkingdom phanerogamae.
1. Phanerogams means visible gametes. Flowering or seed bearing plants, most developed plants with roots, stem, leaves.
2. These are divided into two main groups –
A)Gymnosperms –
1. Gymnos means naked and sperm means seed.
2. Seeds are naked therefore they do not bear true fruit.
3. Evergreen, perennial, woody found mainly on hills.
4. Some plants male and female cones (flowers) on same plant are called dioecious eg: pinus whereas in some on different plants called monoecious eg: cycas.
B) Angiosperms –
1. Angios means cover and sperm means seed.
2. Seeds are covered as true ovary is found. Pollen Grains and ovules are developed in specialized structures called flowers.
3. These are divided into two classes: dicotyledons and monocotyledons.
4. Dicotyledons are characterized by having two cotyledons in their seeds while the monocotyledons have only one.
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Answer:
Characteristic Features of Phanerogams:
Following are the characteristic features of phanerogams:
1.They have well-differentiated plants i.e. the plant body is divided into distinct root, shoot, and leaves.
2.These are multicellular, eukaryotic and chlorophyll containing plants.
3.These are photoautotrophic and produce own food by photosynthesis.
4.These are flowering plants.
5.These have vascular system i.e. xylem and phloem tissues.
6.These are higher terrestrial plants and can be found in deserts, on mountains, and in rainforests.
7.Here the reproductive organs are found in the flowers and are visible.
8.The life cycle of phanerogams is completed in two generations sporophytic generation and gametophytic generation. This is also known as alternation of generation.
9.The plant body is a sporophyte and diploid.
10.The gametophytic phase is much reduced in phanerogams.