Tiwari Academy Discussion

Rajik

Asked: February 26, 2021In: Class 12 Biology

What are the major causes of species losses in a geographical region?

NCERT Solutions for Class 12 Biology Chapter 15 Biodiversity and Conservation Important Board Questions Biodiversity and Conservation NCERT Books for Session 2022-2023 CBSE Board and UP Board Question : 5

Rajik

Asked: February 26, 2021In: Class 12 Biology

What is the significance of the slope of regression in a species − area relationship?

NCERT Solutions for Class 12 Biology Chapter 15 Biodiversity and Conservation Important Board Questions Biodiversity and Conservation NCERT Books for Session 2022-2023 CBSE Board and UP Board Question : 4

Rajik

Asked: February 26, 2021In: Class 12 Biology

Give three hypotheses for explaining why tropics show greatest levels of species richness.

NCERT Solutions for Class 12 Biology Chapter 15 Biodiversity and Conservation Important Board Questions Biodiversity and Conservation NCERT Books for Session 2022-2023 CBSE Board and UP Board Question : 3

Rajik

Asked: February 26, 2021In: Class 12 Biology

How do ecologists estimate the total number of species present in the world?

NCERT Solutions for Class 12 Biology Chapter 15 Biodiversity and Conservation Important Board Questions Biodiversity and Conservation NCERT Books for Session 2022-2023 CBSE Board and UP Board Question : 2

Rajik

Asked: February 26, 2021In: Class 12 Biology

Name the three important components of biodiversity.

NCERT Solutions for Class 12 Biology Chapter 15 Biodiversity and Conservation Important Board Questions Biodiversity and Conservation NCERT Books for Session 2022-2023 CBSE Board and UP Board Question : 1

Salini Basu

Asked: February 21, 2021In: Class 11 Biology

What would be expected to happen if: (a) GA₃ is applied to rice seedlings (b) Dividing cells stop differentiating (c) A rotten fruit gets mixed with unripe fruits (d) You forget to add cytokinin to the culture medium.

NCERT Solutions for Class 11 Biology Chapter 15 Plant Growth and Development Important Board Questions Plant Growth and Development NCERT Books for Session 2022-2023 CBSE Board and UP Board Question : 11

Salini Basu

Asked: February 21, 2021In: Class 11 Biology

Describe briefly: (a) Arithmetic growth (b) Geometric growth (c) Sigmoid growth curve (d) Absolute and relative growth rates

NCERT Solutions for Class 11 Biology Chapter 15 Plant Growth and Development Important Board Questions Plant Growth and Development NCERT Books for Session 2022-2023 CBSE Board and UP Board Question : 3

Salini Basu

Asked: February 21, 2021In: Class 11 Biology

List five main groups of natural plant growth regulators. Write a note on discovery, physiological functions and agricultural/horticultural applications of any one of them.

NCERT Solutions for Class 11 Biology Chapter 15 Plant Growth and Development Important Board Questions Plant Growth and Development NCERT Books for Session 2022-2023 CBSE Board and UP Board Question : 4

Salini Basu

Asked: February 21, 2021In: Class 11 Biology

What do you understand by photoperiodism and vernalisation? Describe their significance.

NCERT Solutions for Class 11 Biology Chapter 15 Plant Growth and Development Important Board Questions Plant Growth and Development NCERT Books for Session 2022-2023 CBSE Board and UP Board Question : 5

Salini Basu

Asked: February 21, 2021In: Class 11 Biology

Why is Abscisic acid also known as stress hormone?

NCERT Solutions for Class 11 Biology Chapter 15 Plant Growth and Development Important Board Questions Plant Growth and Development NCERT Books for Session 2022-2023 CBSE Board and UP Board Question : 6

What are the major causes of species losses in a geographical region?

What is the significance of the slope of regression in a species − area relationship?

Give three hypotheses for explaining why tropics show greatest levels of species richness.

How do ecologists estimate the total number of species present in the world?

Name the three important components of biodiversity.

What would be expected to happen if: (a) GA₃ is applied to rice seedlings (b) Dividing cells stop differentiating (c) A rotten fruit gets mixed with unripe fruits (d) You forget to add cytokinin to the culture medium.

Describe briefly: (a) Arithmetic growth (b) Geometric growth (c) Sigmoid growth curve (d) Absolute and relative growth rates

List five main groups of natural plant growth regulators. Write a note on discovery, physiological functions and agricultural/horticultural applications of any one of them.

What do you understand by photoperiodism and vernalisation? Describe their significance.

Why is Abscisic acid also known as stress hormone?

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