Download App

Science Assertion (A) & Reason (B) MCQ

Diversity in Living Organisms · MP Board (MPBSE) STD 9 (Madhya Pradesh - English Medium). 5 questions.

Questions

Assertion (A) & Reason (B) MCQ

🎯

Test yourself on this topic

5 questions · timed · auto-graded

MCQ 11 Mark
In the follow Questions, the Assertion and Reason have $h$ put forward. Read the statements carefu and choose the correct alternative from th following: Assertion: Reptilia are cold blooded, have scales and breathe through lungs.
Reason: All reptilian have a three chambered heart.
  • ✓
    Both the Assertion and the Reason correct and the Reason is the correct explanation of the Assertion.
  • B
    The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.
  • C
    Assertion is true but the Reason is false.
  • D
    The statement of the Assertion is false but the Reason is true.
Answer
Correct option: A.
Both the Assertion and the Reason correct and the Reason is the correct explanation of the Assertion.
Except for crocodilians, which have a four-chambered heart, all reptiles have a three-chambered heart consisting of two atria and one ventricle. The chamber called the right atrium receives deoxygenated, or "spent," blood returning from the body tissues.
View full question & answer→
MCQ 21 Mark
In the follow Questions, the Assertion and Reason have h put forward. Read the statements carefu and choose the correct alternative from th following: Assertion: Monera and protista both are cellular in body organization, Monera is Eukaryotic and Protista is Prokaryotic.
Reason: Eukaryotic have nuclear membrane and prokaryotic do not have nuclear membrane.
  • A
    Both the Assertion and the Reason correct and the Reason is the correct explanation of the Assertion.
  • B
    The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.
  • C
    Assertion is true but the Reason is false.
  • ✓
    The statement of the Assertion is false but the Reason is true.
Answer
Correct option: D.
The statement of the Assertion is false but the Reason is true.
Monera are unicellular organism's having prokaryotic cellular structure while Protista is also unicellular organisms though possess eukaryotic cellular organization. Monera is simple in structure, with no complexity at the cellular level while Protista is complex in the structure at the cellular level.
View full question & answer→
MCQ 31 Mark
In the following questions, a statement of Assertion is given by the corresponding statement of Reason. Of the statements, mark the correct answer as:
Assertion: Exocoetus is known as flying fish.
Reason: It bears pectoral fins which appear like wings.
  • ✓
    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 Assertion is false, but Reason is true.
Answer
Correct option: A.
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.

Exocoetus is known as flying fish because it bears pectoral fins like wings, which gives it the appearance of a bird wing.

View full question & answer→
MCQ 41 Mark
In the following questions, a statement of Assertion is given by the corresponding statement of Reason. Of the statements, mark the correct answer as:
Assertion: Pinus is a monocot plant.
Reason: It does not bear seeds.
  • 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.
  • ✓
    If Assertion is false, but Reason is true.
Answer
Correct option: D.
If Assertion is false, but Reason is true.
Pine trees are gymnosperms and have varying numbers of cotyledons that can range anywhere from 2 - 24 depending on species, so they are classified as multicotyledonous. But it is neither a monocotyledon or dicotyledon.
Pinus is coming under Gymnosperm group And naked seeds not having seed coats as the monocot and dicot.
View full question & answer→
MCQ 51 Mark
In the following questions, a statement of Assertion is given by the corresponding statement of Reason. Of the statements, mark the correct answer as:
Assertion: Birds have pneumatic bones.
Reason: This reduces the body weight for flight.
  • ✓
    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 Assertion is false, but Reason is true.
Answer
Correct option: A.
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
The bird's hollow bones make the skeleton lighter for flying, and allow more oxygen to be absorbed from the air into the blood for that extra energy a bird needs.
Trunk bones – including the vertebrae, breastbone and pelvic bones – also contain air sacs invading from the lungs.
These are all called pneumatic bones.
View full question & answer→
Generate Paper FreeAll Diversity in Living Organisms topics
Assertion (A) & Reason (B) MCQ - Science STD 9 Questions - Vidyadip