Question

plz answer all 3 questions​

Answer 1

Questions:-

1. Which division among plants has the simplest organisms?

2. How are pteridophytes different from the phanerogams?

3. How do gymnosperms and angiosperms differ from each other?

Answers:-

1. Thallophyta is the division among plants that have simplest organisms. It is because they do not have a differentiated plant body.

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2. Pteridophytes:-

(i) Pteridophytes are the seedless plants.

(ii) They require an external source of water for fertilization.

(iii) Gametophytes are independent.

(iv) Reproductive organs of pteridophytes are inconspicuous.

Phanerogam:-

(i) Phanerogams are seed bearing plants.

(ii) They do not require an external source of water for fertilization.

(iii) Gametophytes are dependent on sporophyte.

(iv) Reproductive organs of phanerogams are quite conspicuous.

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3. Gymnosperms:-

(i) Sporophylls aggregate to form cones.

(ii) The ovary of gymnosperms do not contain ovules.

(iii) Endosperms are haploid.

(iv) Their seeds are always naked.

Angiosperms:-

(i) Sporophylls aggregate to form flowers.

(ii) Ovules in an angiosperm is enclosed within an ovary.

(iii) Endosperms are triploid.

(iv) Their seed are enclosed within a fruit wall.

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Answer 2

Answer:

1.Thallophyta has the division among plant has the simplest organisms.the thallophyta entries as their body design is simple,they don't posses a body design.the division includes bacteria,algae,fungi ,luncheons.

2.pteridophytes...

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I)pheridophytes have naked embryos that R called spores.

2)the reproductive organs inconspicuous, therefore called cryptogamic (those with hidden reproductive organs.

phanerogams~

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1) phanerogams produce seeds which consists of embryo and stored food

2) they have well differentiated reproductive tissues which after reproductive process produce seeds.

3) Angiosperms are flowering plants that have their seeds enclosed within the fruits.gymnosperms ,on the other hand ,do not bear flowers and fruits and the seeds are exposed on the surface of leaves or scales.

Explanation:

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