11. Which is the largest muscle in the human body?
[A] Gluteus maximus
[B] Biceps brachii
[C] Masseter
[D] Pectorlis major
Show Answer
Correct Answer: A [Gluteus maximus]
Notes:
Gluteus maximus is the largest muscle in the human body located at the lower back, it is also called as the buttocks.
12. Who among the following has defined race in population concept?
[A] Montagu
[B] Dobzhansky
[C] Templeton
[D] Hooton
Show Answer
Correct Answer: B [Dobzhansky]
Notes:
Race refers to classification of humans into relatively large and distinct population groups based on appearance through heritable phenotypic characteristics, often influenced by and correlated with culture, ethnicity and socio-economic status.
Dobzhansky (1970) has defined race in population concept as “Race are genetically distinct Mendelian populations. They are neither individuals nor particular genotypes; they consist of individuals who differ genetically among themselves.”
13. Which of the following is a type of Monera Kingdom?
[A] Bacteria
[B] Mushroom
[C] Euglena
[D] Mucor
Show Answer
Correct Answer: A [Bacteria]
Notes:
Bacteria comes under Monera kingdom, Mushroom and Mucor are part of Fungi.
14. What is a jelly-like substance found floating inside the plasma membrane called?
[A] Cell sap
[B] Cytoplasm
[C] Karyoplasm
[D] Mitochondria
Show Answer
Correct Answer: B [Cytoplasm]
Notes:
The jelly-like substance inside the plasma membrane in which all the organelles float is called cytoplasm.
15. What are the first plants that lived on land?
[A] Angiosperms
[B] Gymnosperms
[C] Bryophytes
[D] Pteridophytes
Show Answer
Correct Answer: C [Bryophytes]
Notes:
Bryophytes are the first plants that lived on land.
16. Drying, wilting, and dropping of leaves of a plant due to insufficient water supply, excessive transpiration, or any vascular disease is called
[A] Guttation
[B] Phyllotaxy
[C] Wilting
[D] Phyllode
Show Answer
Correct Answer: C [Wilting]
Notes:
Drying, wilting, and dropping of leaves of a plant due to insufficient water supply, excessive transpiration, or any vascular disease is called Wilting.
17. Which is the only metal present in chlorophyll?
[A] Sodium
[B] Iron
[C] Magnesium
[D] Cobalt
Show Answer
Correct Answer: C [Magnesium]
Notes:
Chlorophyll or green leaves contain magnesium ions present in the chloroplast of all green plants. Magnesium ion is found in the middle of the porphyrin ring.
18. What does a plant need to survive?
[A] sunshine
[B] nutrients
[C] water
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
A plant needs sunshine, nutrients, and water to survive. Plants provide food, medicine, shelter, and the oxygen we need to breathe.
19. The presence of pores in Porifera is called__.
[A] cnidoblasts
[B] Ostia
[C] Medusa
[D] None of these
Show Answer
Correct Answer: B [Ostia]
Notes:
The presence of pores in Porifera’s body wall is called Ostia. Porifera are commonly called sponges.
20. Which one is NOT true about sponges?
[A] They are multicellular
[B] They are autotrophs
[C] They are eukaryotes
[D] They are the simplest animals lacking tissue and organs
Show Answer
Correct Answer: B [They are autotrophs]
Notes:
Sponges are multicellular, eukaryotes, and the simplest animals lacking tissue and organs.
