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Unit 1 bio v1

[Biology] Chordates

[Biology] Chordates

neetexpress June 24, 2020 Biology / Unit 1 bio v1

Reading Time: 5 minutes INTRODUCTION Chordates are animals in which notochord is present. Notochord is a flexible rod-like structure of mesodermal origin, that serves …

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[Biology] Non-Chordates

[Biology] Non-Chordates

neetexpress June 24, 2020 Biology / Unit 1 bio v1

Reading Time: 7 minutes INTRODUCTION Non-chordates are animals lacking a Notochord. Notochord is a rod-like elastic structure which gives rise to the vertebral column. …

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[Biology] Kingdom-Animalia (Introduction & Classification)

[Biology] Kingdom-Animalia (Introduction & Classification)

neetexpress June 24, 2020 Biology / Unit 1 bio v1

Reading Time: 4 minutes INTRODUCTION Kingdom Animalia includes approximately 1.2 million species of multi-cellular animals. GENERAL CHARACTERISTICS OF ANIMALIA All organisms included in Kingdom …

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[Biology] Angiosperms

[Biology] Angiosperms

neetexpress June 24, 2020 Biology / Unit 1 bio v1

Reading Time: 4 minutes WHAT IS ANGIOSPERMS? Angion means Vessel, and Sperma means Seed. So, Angiosperms means seeds within vessel. The seeds of angiosperms …

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[Biology] Gymnosperms

[Biology] Gymnosperms

neetexpress June 24, 2020 Biology / Unit 1 bio v1

Reading Time: 4 minutes WHAT IS GYMNOSPERMS? Gymno means Naked, and Sperma means Seed. So, Gymnosperms means naked seed. Gymnosperms have evolved much earlier …

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[Biology] Pteridophytes

[Biology] Pteridophytes

neetexpress June 24, 2020 Biology / Unit 1 bio v1

Reading Time: 4 minutes INTRODUCTION The term Pteridophyte is derived from two words ‘Pteron’ meaning “feather” and ‘phyton’ meaning “plant”. Pteridophytes are the first …

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[Biology] Bryophytes

[Biology] Bryophytes

neetexpress June 24, 2020 Biology / Unit 1 bio v1

Reading Time: 6 minutes Introduction Bryophytes belong to cryptograms which are nonvascular seedless plants. They have approximately 20,000 known species and are widely distributed …

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[Biology] Algae

[Biology] Algae

neetexpress June 24, 2020 Biology / Unit 1 bio v1

Reading Time: 6 minutes INTRODUCTION Algae comprise a diverse group of non-flowering, photosynthetic and oxygen-producing plants that lack typical plant structures i.e. roots, stem, leaves. …

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[Biology] Kingdom-Plantae (Introduction)

[Biology] Kingdom-Plantae (Introduction)

neetexpress June 24, 2020 Biology / Unit 1 bio v1

Reading Time: 4 minutes

WHAT IS PLANTAE?

  • Plantae is the kingdom which constitutes all the plants present on the earth.
  • With more than 250,000 species, they are the second largest group in sizeafter Arthropoda.
  • There are a wide variety in shapes and sizes of plants…….
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[Biology] Viruses and Viroids

[Biology] Viruses and Viroids

neetexpress June 24, 2020 Biology / Unit 1 bio v1

Reading Time: 6 minutes

WHAT IS VIRUS

  • About a century ago the word “virus” was generally referred to as a poison associated with disease and death.
  • The present status of virus is completely different.
  • Now viruses are known as particles of nucleic acid often with a protein coat.
  • Viruses are defined as non-cellular infectious entities…..
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