Ramachandrapuram

Pawan Agarwal replied | 17 hrs ago

I would recommend these books

• Spoken English: A Self-Learning Guide to Conversation Practice — V. Sasikumar, Orient BlackSwan

• Rapidex English Speaking Course — Pustak Mahal Editorial Team, Pustak Mahal Publishers

• English for Everyone: English Conversation — DK Publishing, Dorling Kindersley

• Speak English Like a Star — Yogesh Vermani, Arihant Publications

• Practice Makes Perfect: English Conversation — Jean Yates, McGraw-Hill Education

Diljot Kohli replied | 12 hrs ago

These are the best ones used by professional trainers in India and worldwide:

1. For TEACHING METHOD - Must have for any teacher

• How to Teach Speaking by Scott Thornbury
• English Grammar in Use by Raymond Murphy

2. For FLUENCY & DAILY CONVERSATION - Best for students

Rapidex English Speaking Course - R. K. Gupta

3. Spoken English (A Manual of Speech Communication) by R.K. Bansal & J.B. Harrison

4. For VOCABULARY & CONFIDENCE BUILDING

 Word Power Made Easy by Norman Lewis

5. The Art of Public Speaking by Dale Carnegie

6. English Conversation Practice by Grant Taylor

My Recommended Combo for a Teacher:

Student Level Books to Follow

Beginner: Rapidex + Bansal & Harrison + Your own Hindi-English notes

Intermediate: Raymond Murphy + Word Power Made Easy + Grant Taylor Dialogues

Advanced: Michael Swan + Dale Carnegie + Thornbury

Saurabh replied | 2 days ago

a) Chromosomes in a pollen mother cell
A pollen mother cell (PMC) is diploid (2n).= 24 Chromosome 

b)Chromosomes in each microspore after meiosis

Meiosis reduces the chromosome number to haploid (n). = 12 Chromosome 

c) Meiotic divisions required to produce 100 pollen grains

One pollen mother cell undergoes one meiosis and produces 4 microspores.

Number of PMCs required:

Each PMC undergoes one meiotic division.

Answer: 25

d) Total mitotic divisions for 100 mature male gametophytes

Each microspore undergoes:

1st mitotic division → vegetative cell + generative cell

2nd mitotic division of generative cell → 2 male gametes

So, 2 mitotic divisions per microspore.

For 100 microspores:

100×2= 200mitotic division 

Pawan Agarwal replied | 17 hrs ago

A flowering plant has $2n=24$ chromosomes. So, $n=12$.

a) Chromosomes in a pollen mother cell (PMC):

• A pollen mother cell is diploid.

• Hence, it will have $2n=24$ chromosomes. Answer: 24

b) Chromosomes in each microspore after meiosis:

• Meiosis reduces chromosome number to half.

• Each microspore will have $n=12$ chromosomes. Answer: 12

c) Number of meiotic divisions to produce 100 pollen grains:

• Each pollen mother cell undergoes meiosis → produces 4 microspores (pollen grains).

• To produce 100 pollen grains:

Answer: 25

d) Total mitotic divisions for 100 mature male gametophytes:

• Each microspore undergoes 1 mitotic division → forms vegetative cell + generative cell.

• Generative cell undergoes 1 more mitotic division → forms 2 male gametes.

• So, each microspore requires 2 mitotic divisions in total.

• For 100 microspores (pollen grains):

Answer: 200

Yagnesh replied | 2 days ago

Please don't feel that you have to start learning English all over again. You already have years of experience studying and teaching it. After being away from work for 12 years, it is natural to feel a little rusty and lose confidence.

Start slowly. Spend 15–20 minutes every day revising basic grammar and another 15 minutes speaking in English about your daily life. Read a little, listen to English conversations, and try explaining simple grammar topics aloud as if you are teaching a student.

Don't worry about making mistakes. With regular practice, your confidence will gradually come back. You already have the foundation—you just need to bring it back through practice.