Biodiversity must be conserved as it plays an important role in many ecosystem services that nature provides. Explain any two services of the ecosystem.

Name the type of biodiversity represented by the following:
Estuaries and alpine meadows in India?

Topic:

Biodiversity and Conservation

Book:

Trueman's Biology for NEET (Truemans)

View solution

Question 2

Hard

The above graph shows species area relationship. Write the equation of the curve 'a' and explain.

Topic:

Biodiversity and Conservation

Book:

Trueman's Biology for NEET (Truemans)

View solution

Question 3

Name the type of biodiversity represented by the following:
(i) 1000 varieties of mangoes in India.
(ii) Variations in terms of potency and concentration of reserpine in

R a u w o l f ia v o mi t or ia

growing in different regions of Himalayas.

Topic:

Biodiversity and Conservation

Book:

Trueman's Biology for NEET (Truemans)

View solution

Question 4

Hard

How is the "sixth episode of extinction" of species on earth, now currently in progress, different from the five earlier episodes? What is it due to? Explain the various causes that have brought about this difference.

Topic:

Biodiversity and Conservation

Book:

Trueman's Biology for NEET (Truemans)

View solution

Practice more questions from Biodiversity and Conservation

Question 1

The extinction of passenger pigeon was due to
(A) increased number of predatory birds.
(B) over-exploitation by humans.
(C) non-availability of the food.
(D) bird flu virus infection.

Topic:

Biodiversity and Conservation

Book:

Oswaal CBSE MCQs Chapterwise For Term I II, Class 12, Biology (Oswaal)

View solution

Question 2

Medium

Occurrence of endemic species in South America and Australia is due to

these species has been extinct from other regions
continental separation
there is no terrestrial route to these places
retrogressive evolution.

Topic:

Biodiversity and Conservation

Book:

33 Years NEET-AIPMT Chapterwise Solutions - Biology 2020 (MTG)

View 2 solutions

Question 3

What does the term genetic diversity refer to ? What is the significance of large genetic diversity in a population ?

Topic:

Biodiversity and Conservation

Book:

Oswaal CBSE Question Bank Class 12 Biology Chapterwise and Topicwise (Oswaal)

View solution

Question 4

Medium

Which hypothesis suggests ecosystems are like aeroplane wings where flight (ecosystem functioning) may or may not be compromised depending upon which species are lost-

rivet popper hypothesis
Gaia hypothesis
Cause - exclusion hypothesis
Oudum's hypothesis

Topic:

Biodiversity and Conservation

Book:

Dr. Ali Objective Biology

View solution

Practice questions on similar concepts asked by Filo students

Question 1

A cell membrane is made of different molecules like phospholipids, proteins and cholesterol. Phospholipids are a type of lipids that contain phosphate group which are the important component of cell membranes. A phospholipid contains fatty acid and phosphate group in which fatty acids are hydrophobic tails and phosphate group forms hydrophilic head. There are also some long carbohydrate chains projecting from the cell surface. These carbohydrate molecules interact with membrane protein and phospholipids forming glycolipids and glycoprotein.

Topic:

Biology

View solution

Question 2

Ans. मनुष्य में चार प्रकार के रक्त-समूह पाए जाते हैं-

A, B, AB

रक्त-समूह वाले व्यक्ति में

O / A

A

प्रतिजन,

B

रक्त-समूह वाले में

B

प्रतिजन,

AB

रक्त-समूह वाले व्यक्ति में

A

दोनों प्रतिजन होता है जबकि

B

O

रक्त-समूह वाले व्यक्ति में कौई ,्रतिजन नहीं होता ।

ABO

रूधिर-वर्गों की वंशानुगति

O

- I^{0} I^{0}

A

- I^{A} I^{0}

I^{A} I^{A}

B

- I^{B} I^{0}

I^{B} I^{B}

AB

- I^{A} I^{B}

एलील

A

I^{λ}

की उपस्थिति में

A

प्रेतिजन बनता है । एलील

B

I^{B}

की उपस्थिति में

B

प्रतिजन बनता है। एलील

O

अर्थात्

A

की अनुपस्थिति में कोई प्रतिजन नहीं बनता। (i) माता-पिता के रुधिर वर्ग

B

- A

O

प्रतिजन ही बनेगा इसलिए बच्चे का रुधि वर्ग-

A

A

होगा। (ii) माता-पिता के रुधिर वर्ग

- B

O

प्रतिजन ही बनेगा इसलिए बच्चे का रुधिर वर्ग

B

- B

होगा। (iii) माता-पिता के रुधिर वर्ग

- A

B

दोनों प्रतिजन बनेगा इसलिए बच्चे का रुधिर वर्ग

A

और

B

AB

होगा (iv) माता-पिता के रुधिर वर्ग-

AB

AB

A

, दोनों प्रतिजन बनेया और इस स्थिति में

B

25%

संतानों

A, 25% - B

रुधिर वर्ग वाली होगी। (v) माता-पिता के रुधिर वर्ग-

50% AB

A B

O

A

दोनों प्रतिजन बनेगा और इस स्थिति में

B

50%

संतान

A

रुधिर वर्ग की होगी। (vi) विषमयुग्मजी

50%

संतान

B

A

रुधिर वर्ग वाले स्त्री-पुरुष की संतानों

B

1 : 1 : 1 : 1

के अनुपात में

A, B, A B