Difference between cryptogemes and pharerogemes ,chordata and non chordata,piescs and amphibia , prymnosperm and angrorperm ?

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Differences between cryptogams and phanerogams

Cryptogamae: This sub-kingdom includes plants which do not flower in their life time.

*Plant body is not well differentiated into stem, leaves etc.

*Reproductive organs are hidden.

* These are less evolved plants.

*These plants do not bear seeds.

*These can reproduce through spores.

*Cryptogams are further divided into three groups: Thallophyta, Bryophyta and Pteridophyta.

Phanerogamae: This sub-kingdom includes plants which flower to perform sexual reproduction.

*Plant body possess well-formed stem, leaves and roots.

*These are highly evolved plants.

*These plants produce seeds.

*Seeds germinate into new plants.

*Phanerogams are further classified into Gymnosperms and Angiosperms.

Differences between Chordates and Non- chordates
Chordates:

1. A notochord is present at some stage in the life of a chordate.

2. Central nervous system is dorsal and hollow.

3. Gill slits are present in the pharynx either in the embryo or adult.

4. Tail is present at some stage in the life of the chordate.

5. Heart is ventral.

6. If present RBCs contain respiratory pigment (haemoglobin).

Non- chordates:

1. Notochord is not present at any stage in the life of a non-chordate.

2. Central nervous system is ventral and solid.

3. Gill slits are absent.

4. Tail is absent.

5. Heart is dorsal (if present).

6. If haemoglobin or other respiratory pigment is present, it is found in the blood plasma. RBCs are absent.

Differences between Piceses and amphibia
Piceses - 1-These are group of fishes.

2-These have scales and gills.

3-These have no mucus gland in their body.

amphibia-1-These are group of frogs and they live in both land and water

2-these don't have scales.

3-these have mucus gland in their body.

Differences between Gymnosperms and Angiosperms
Gymnosperms

1. In gymnosperms the reproductive structures are cones which are unisexual

2. The ovules are exposed, i.e., they are not located in the ovary.

3. After fertilization, the ovules develop into naked seeds.

4. The microspores and megaspores are produced by male and female cones

5. The pollen grains fall and germinate directly on the micropyle of the ovules

6. Fertilization is simple

7. Endosperm is haploid

8. In gymnosperms the pollination is by wind alone

9. In gymnosperms, generally the xylem contains only tracheids. Vessels are absent

10. The phloem has no companion cells

Angiosperms

1. In Angiosperms, the flowers are the reproductive organs and they may be both unisexual and bisexual.

2. The ovules are enclosed in the ovary.

3. After fertilization, the ovules develop into seeds inside the fruit.

4. The microspores are produced in anthers while the megaspores are produced in ovules of the ovary in flowers

5. The pollen grains fall on the stigma, germinate and the pollen tube carries the male gamete to the ovary

6. Fertilization is double

7. Endosperm is triploid

8. In angiosperms, different agents like wind, insects, bats etc are involved in pollination

9. Angiosperms vessels are always are present

10. Companion cells are present

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Difference between cryptogemes and pharerogemes ,chordata and non chordata,piescs and amphibia , prymnosperm and angrorperm ? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Difference between cryptogemes and pharerogemes ,chordata and non chordata,piescs and amphibia , prymnosperm and angrorperm ? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Difference between cryptogemes and pharerogemes ,chordata and non chordata,piescs and amphibia , prymnosperm and angrorperm ?.

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