11. Study of Porifera (sponges) is known as __?
[A] Parazoology
[B] Palaeozoology
[C] Zoophytology
[D] None of these
Show Answer
Correct Answer: A [Parazoology]
Notes:
Parazoology is the branch of zoology that deals with the study of parazoa, primitive multicellular animals that lack true tissues and organs. It encompasses the study of Porifera (sponges), one of the most primitive animal phyla that date back to the Precambian era over 600 million years ago.
12. Who is the father of Modern Embryology?
[A] Antonie Van Leeuwenhoek
[B] Stephen Hales
[C] Karl Ernst von Bayer
[D] Georges Cuvier
Show Answer
Correct Answer: C [Karl Ernst von Bayer]
Notes:
Karl Ernst von Bayer was a Prussian-Estonian embryologist who discovered the mammalian ovum and notochord and founded the new science of comparative embryology with comparative anatomy.
13. What is the basic unit of Classification?
[A] Genus
[B] Species
[C] Order
[D] Family
Show Answer
Correct Answer: B [Species]
Notes:
Species is the basic unit of classification. Species are known as the basic units of classification because individuals of species are closely related structurally and functionally and can interbreed freely.
14. Which sugar is present in RNA?
[A] Hexose
[B] Ribose
[C] Fructose
[D] Glucose
Glucose
Show Answer
Correct Answer: B [Ribose]
Notes:
Ribose is a simple sugar present in RNA. The chemical formula of ribose is C5H10O5, Hexose (C6H1206), Glucose (C6H12O6).
15. A condition in which the stamens are attached to the petals of a flower instead of directly attached to the thalamus is called__?
[A] Epipetalous
[B] Monadelphous
[C] Staminode
[D] Epiphyllous
Show Answer
Correct Answer: A [Epipetalous]
Notes:
A condition in which the stamens are attached to the petals of a flower instead of directly attached to the thalamus is called Epipetalous. Solanum is an example of Epipetalous.
16. Where is the phloem located?
[A] outer side of the vascular bundle.
[B] centre of the vascular bundle
[C] marginal regions of leaves and stems
[D] None of these
Show Answer
Correct Answer: A [outer side of the vascular bundle.]
Notes:
The xylem is located towards the adaxial surface of the leaf, whereas the phloem is located towards the axial surface of the leaf.
17. Which of the following is the formation of male and female gametes?
[A] Gametogenesis
[B] Gamete transfer
[C] Megasporogenesis
[D] Microgametogensis
Show Answer
Correct Answer: A [Gametogenesis]
Notes:
Gametogenesis is the formation of male and female gametes while Gamete transfer brings the male and female gametes together.
18. Which of the following helps in seed dispersal?
[A] Seeds
[B] Flowers
[C] Fruits
[D] None of these
Show Answer
Correct Answer: C [Fruits]
Notes:
Fruits are fleshy substances that usually surround the seeds. Flowers help in seed dispersal.
19. The grass is an example of which root?
[A] Nodulose Roots
[B] Moniliform Roots
[C] Annulated Roots
[D] Prop Roots
Show Answer
Correct Answer: B [Moniliform Roots]
Notes:
Moniliform roots are swollen and compressed. The grass is an example of Moniliform Roots.
20. Earthworms and leeches belong to which phylum?
[A] Arthropoda
[B] Annelida
[C] Hemichordata
[D] Chordata
Show Answer
Correct Answer: B [Annelida]
Notes:
Earthworms and leeches belong to the phylum Annelida. They can be aquatic or terrestrial, free-living, or even parasitic. They have organs called nephridia for excretion.
