Home
Class 12
BIOLOGY
Assertion: Increased health facilities a...

Assertion: Increased health facilities and better living conditions have enhanced longevity.
Reason: Because they have reduced the mortality due to disease and other living conditions.

A

Both Assertion and Reason are true , the reason is the correct explanation of Assertion.

B

Both Assertion and Reason are true , the reason is not the correct explanation of Assertion.

C

Assertion is false , Reason is true

D

Assertion is true , Reason is false.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • REPRODUCTIVE HEALTH

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWERS (II.Answer the following)|15 Videos

  • REPRODUCTIVE HEALTH

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWERS (III.Answer the following)|9 Videos

  • REPRODUCTIVE HEALTH

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWERS (IV.Answer the following)|5 Videos

  • REPRODUCTION IN ORGANISMS

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWERS - ANSWER THE FOLLOWING:|30 Videos

Similar Questions

Explore conceptually related problems

People living in high altitudes have an increased RBC count. Give reason.

Assertion : Threatened species are those living species which have been greatly reduced in their number and are liable to become extinct if the causative factors continue. Reason : IUCN is an international organisation which maintains the IUCN red list of threatened species, to assess the conservation status of different species. (a) If both assertion and reason are true and reason is the correct explanation of assertion. (b) If both assertion and reason are true but reason is not the correct explanation of assertion. (c) If assertion is true but reason is false. (d) If both assertion and reason are false.

What kind of adaptations extremophiles have to live in the extreme conditions.

Assertion : Astronauts are not floating but falling freely around the Earth due to their huge orbital velocity . Reason : Astronauts and spacestation have equal acceleration , they are under free fall condition .

Keystone species deserve protection because these (a) are capable of surviving in harsh environmental conditions (b) indicate presence of certain minerals in the soil (c) have become rare due to overexploitation (d) play an important role in supporting other species

Assertion (A): The first form of life could have come from pre-exiting non-living inorganic molecule. Reason (R) :This the basis of chemical evolution of life.

Assertion: Primary succession occurs over a primarlly bare area where there was no living matter from the very beginning Reason: During primary succession, reproductive structures of the previous occupants give rise to a new seral community as soon as the conditions become favourable. \ (a) Assertion and reason, both are correct. Reason is the correct explanation for assertion. (b) Assertion and reason, both are correct. Reason is not the correct explanation for assertion. (c) Assertion is correct but reason is not correct. (d) Reason is correct but assertion is not correct.

Assertion (A) : The Prokaryotes which have the ability to grow in extreme condition. Reason (R) vents, hot springs and polar ice caps, hence are called extremophites. : Prokaryotes can grow in volcano They are capable of synthesizing their food without sunlight and oxygen by utilizing hydrogen sulphide and other chemicals from the volconic vents.

Ramu was 15 vears old when he went to a doctor to check his blood pressure. His pressure was around 158/98mmHg. The doctor advised him to measure his blood pressure at home for two weeks. He came to the doctor saying his average blood pressure was around 160/100mmHg. Doctor concludes that Ramu has high blood pressure or hypertension. If not controlled, hypertension can lead to heart failure, stroke and kidney failure. He returned to the doctor after two months after taking the drug, ACH inhibitor. This chemical blocks the production of angiotensin II, a powerful vasoconstrictor, so his blood pressure returned back to normal. 1. Why are people with high blood pressure at greater risk for having a hemorrhagic stroke? 2. Without medication Ramu's blood pressure was around 160/100mmHg after two weeks. Why this pressure was referred to as hypertension by the doctor. 3. Blocking the action of vasoconstrictor lower the blood pressure? Give reasons. 4. What is the role of ACH inhibitor in reducing blood pressure? 5. What conditions one might expect if the blood pressure is not controlled?