Download App

Biodiversity, Conservation and Environmental Issues — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYBiodiversity, Conservation and Environmental Issues5 Marks
Question
Habitat loss and fragmentation.
✓

Answer

  1. Habitat loss and fragmentation is the prime cause of destruction of biodiversity.
  2. Due to degradation and pollution there is reduction in vast natural habitats. This creates crisis situation for resident living organisms.
  3. This is largely due to human activities.
  4. There is also a threat to migratory birds and for animals which need larger territories.
  5. Reduction in tropical rain forests has been reduced from 14% to 6% over the years, which has surely destroyed many species.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following questions in detail." from Biodiversity, Conservation and Environmental Issues→Biodiversity, Conservation and Environmental Issues — all question types→BIOLOGY STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

Zona pellucida and Corona radiata.
→
Long Answer Questions: Pleiotropy.
→
Distinguish between: Inorganic fertilizers and Organic fertilizers / biofertilizers.
→
Naman entered into a quarrel with some farmers who were spraying DDT in their field. Many people gathered at the spot to see and enjoy the incident. The angry mob demanded that Naman should not interfere in the farmer's job. Naman tried to explain his point and finally succeeded in explaining the harmful effects of DDT.
  1. What is biomagnification? Explain with an example.
  2. Is biomagnification related with DDT only? Comment.
  3. What is the effect of DDT on birds?
  4. What values did Naman promote?
→
What are biofertilizers? Explain what are the different types of biofertilizers with suitable examples.
→
Distinguish Between: Incomplete dominance and Co-dominance.
→
Give an account of alcoholic beverages.
→
Answer the following questions:
Differentiate between gametogenesis in human males and females on the basis of:
  1. Time of initiation of the process.
  2. Products formed at the end of the process.
→
Why does our immune system fail against pathogens like Trypanosoma cruzi and Plasmodium?
→
  1. Write an equation for Verhaulst-Pearl Logistic Growth, where.
N - Population density at a timet E.

r - Intrinsic rate of natural increase.

K - Carrying Capacity.
  1. Draw a graph for a population whose population density has reached the carrying capacity.
  2. Why is this logistic growth model considered a more realistic one for most animal populations?
  3. Draw a growth curve where resources are not limiting to growth of a population.
→