CBSE Class 12 Biology HOTs Ecosystem

CBSE Class XII Biology HOTs Questions Database for chapter Ecosystem. Based on CBSE and CCE guidelines. The students should practice these HOTs Questions to gain perfection which will help him to get more marks in CBSE examination. Based on CBSE and CCE guidelines. Based on the same pattern as released by CBSE every year. CBSE releases HOTs Questions every year. These papers are released prior to the CBSE board examinations so that students can do practice. databse of 1 marks, 2 marks, 3 marks and 5 marks questions.

 

Chapter 14. ECOSYSTEM

1) How does the man made ecosystem differ from the natural ecosystem? 1

2) Detritus contribute to the biogeochemical cycles, how? 1

3) Can temperature regulate the rate of decomposition how? 1

4) The detritus food chain and grazing food chain differ. How? 1

1) "The Green Revolution has been achieved due to the use of improved crop varieties and agrochemicals, but it is still not enough to feed the growing population". Suggest a suitable method of agriculture to meet the demand. 1

2) A species of Solanum is intolerant to salty soil. How will you make the species tolerant to the given abiotic stress?. 1

3) Why do we use GM to create tailor made plants?. 1

2 marks

1) Some cotton plants grown by farmers are known as 'Bt cotton'. 2

a) What does Bt stand for?.

b)What is the advantage of this cotton plant?

c)How did scientists achieve this?

2) The bacillus is not killed even after the application of insecticidal protein which is toxic. Comment. 2

3) Bt toxins are insect group specific. The toxin is coded by a gene named cry. How does the genes cry IAc differ from cry IAb?

4) Dr.Arun developed a vitamin A rich potato through his research on genetics.

a)What do you call such potato plants? 2

b)Who can approve the validity and safety of introducing potato for public uses.


Refer to the attached file for CBSE Class XII HOTs Biology - Ecosystem

Tags: 

 


Click to View or Download pdf file
Click for more Biology Study Material

Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

CBSE Recommends Arogya Setu App

Written recommendation from CBSE to school principals for initiating the Arogya Setu App! The Central Board of Secondary Education has advised to all school principals through a written communication recommending the “Arogya Setu App” and Health Ministry's protocol for...

CBSE advisory on student marks

CBSE has issued a public advisory for all students to be careful from unscrupulous persons impersonating themselves as officers/officials of CBSE. These people have been contacting parents and have been telling them that they have access to student marks data for Board...

CBSE Boards Answer Sheet Evaluation Class 10 and Class 12

HRD Minister Ramesh Pokhriyal, through a video conference with all the education ministers of the state, discussed the further steps to be taken to smoothen the education process during the Covid-19 lockdown. The most important topic which was discussed repeatedly on...

CBSE Board 2020 Important announcement regarding rescheduling of Class 10 12 Board Exams

CBSE Board Exams 2020: Here's when Board will organize the CBSE Class X and Class XII Board Exams.   All the candidates appearing for CBSE Standard X and Standard XII Board Exams 2020 can cross-check the essential notice released by the board concerning the...

CBSE Recommends Arogya Setu App, Writes To School Principals

Written recommendation from CBSE to school principals for initiating the Arogya Setu App! New Delhi:  The Central Board of Secondary Education has advised all school principals through a written communication recommending the “Arogya Setu App” and Health Ministry's...

Art Integrated Project work for classes 1 to 10

CBSE Board has decided to introduce Art-Integrated Project work for classes I to X to promote Art-Integrated Learning in schools to make teaching learning Competency-Based and joyful. As part of this, at least one Art-Integrated Project in each subject shall be taken...

×
Studies Today