VIDEO ON LIFE CYCLE OF ANGIOSPERM
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Double fertilization is the fusion of one male gamete with the egg cell and other with the two polar nuclei to form zygote and the endosperm respectively at the same time .This double fertilization present only in angiosperm in the plant kingdom.
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QUIZ 28- 5 JULY 2024 Read More »
Gymnosperms are adapted to land conditions because :
•1.Vascular tissue is present.
•2.Cambium in vascular tissue for secondary growth so bark is produced.
•3.Pollen grain production in large no. to ensure anemophily.
•4.Development of female gametophyte inside ovule.
•5.Formation of seed to protect the embryo in it.
•6.No need of external water for fertilization.
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CURRENT AFFAIRS 2024 REPORTS BY MAJOR INTERNATIONAL ORGANIZATIONS IMPORTANT FOR COMPETITIVE EXAMS IN INDIA
CURRENT AFFAIRS 2024 REPORTS BY MAJOR INTERNATIONAL ORGANIZATIONS 5 JULY 2024 Read More »
HAPLONTIC LIFE CYCLE: In this the main plant body is haploid gametophyte which is dominant phase in life of plant .This gametophyte produces gametes which fuse to form diploid zygote ( sporophyte) which produces spores by meiosis these haploid spore now form main plant body gametophyte. Ex. Spirogyra,Ulothrix etc.
MCQ FROM PANCHAYAT RAJ INSTITUTION AND PESA ACT 1996 FOR UPSC SSC PCS PART 2 OTHER COMPETITVE EXAMS IN INDIA 2024-2025 INDIAN CONSTITUTION
QUIZ 27- 4 JULY 2024 Read More »