1st lesson free
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Krishna
- Rate Ksh. 274
- Response 1h
Ksh. 274/hr
Contact
1st lesson free
- Biology
- Zoology
- Biotechnology
I am passed out pure science stream. My most favourite subject biology.
- Biology
- Zoology
- Biotechnology
Lesson location
About Krishna
Welcome back to class! Grab your notebook and pen. Today, we are keeping our focus locked on high-yield NCERT concepts, diagrams, and precise definitions so you are completely prepared to ace your biology exams.Fantastic! I love the enthusiasm. Since you're geared up and ready to go, let's make the most of our study session.
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About the lesson
- Lower Primary
- Upper Primary
- Lower Secondary
- +11
levels :
Lower Primary
Upper Primary
Lower Secondary
Senior School
Tertiary
University
Adult Education
Masters
Diploma
Doctorate
CS
ATP
MBA
Pre-Primary
- English
All languages in which the lesson is available :
English
Here is a comprehensive, high-yield compilation of the most important lines and concepts directly from NCERT Biology textbooks, structured by chapters/units to help you revise quickly and score maximum marks in exams.
Unit I: Reproduction
Sexual Reproduction in Flowering Plants
Microsporogenesis: The process of formation of microspores from a pollen mother cell (PMC) through meiosis is called microsporogenesis.
Tapetum: The innermost wall layer of the anther. It nourishes the developing pollen grains and is multinucleate with dense cytoplasm.
Pollen Viability: In some cereals like rice and wheat, pollen grains lose viability within 30 minutes of release; in some members of Rosaceae, Leguminosae, and Solanaceae, they maintain viability for months.
Double Fertilization: Unique to angiosperms. It involves two types of fusions: Syngamy (male gamete + egg cell \rightarrow zygote) and Triple Fusion (male gamete + two polar nuclei \rightarrow Primary Endosperm Nucleus / PEN).
Apomixis: A form of asexual reproduction that mimics sexual reproduction, producing seeds without fertilization (e.g., in some species of Asteraceae and grasses).
Human Reproduction
Spermiogenesis: The transformation of spermatids into spermatozoa (sperm).
Spermiation: The release of mature spermatozoa from the Sertoli cells into the lumen of the seminiferous tubules.
Implantation: The blastocyst embeds in the endometrium of the uterus, brought about by the blastomere cells, leading to pregnancy.
Placenta: Acts as an endocrine tissue and produces several hormones like hCG, hPL, estrogens, and progestins (essential during pregnancy).
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Rates
Rate
- Ksh. 274
Pack prices
- 5h: Ksh. 1370
- 10h: Ksh. 2740
free lessons
The first free lesson with Krishna will allow you to get to know each other and clearly specify your needs for your next lessons.
- 1hr
online
- Ksh. 274/h
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