Q: Write salient features of anthozoans.
A: Anthozoa is one of the classes of phylum cnidaria.
Anthozoans are commonly called seaanaemones.
They are sedentary (only polypoid forms).
Coelenteron is divided into chambers by vertical partitions called mesenteries.
Cnidocytes are present in ectodum and endoderm.
Germ cells are derived from endodum. eg: Adamsia, Gorgonia, Pennatula
Q: What are the chief characters of crustaceans?
A: Crustacea is one of the classes of phylum Arthropoda.
Crustaceans are aquatic arthropods.
Body is divisible into cephalothorax and abdomen.
Cephalic appendages include two pairs of antennae, one pair of mandibles and two pairs of maxillae.
Respiratory organs are gills and excretory organs are green glands / antennary glands.
Typical larva is naupleus. eg: Palaemon, Daphnia.
Q: What are the features peculiar to Ratitae birds? Give two examples.
A: Ratitae includes the modern fightless birds.
They exhibit discontinuous distribution.
Wings and flight muscles are reduced.
Sternum is raft like & without keel.
Furcula, syrinx, preen glands etc. are absent.
Male birds have penis.
Hatchlings are precocial. eg: Struthio camelus, Dromaeus.
Junior Inter Zoology Important Questions and Answers for AP and Telangana
Q: What is meant by nocturnal periodicity?
A: The tendency of microfilariae to reach peripheral circulation only during night time (10 P.M. to 4 A.M.) is known as nocturnal periodicity.
Q: Write scientific names of any two plants with hallucinogenic properties.
A: Atropa belladona, Datura
Q: Define drug abuse.
A: When a chemical substance (i.e., drug) is taken for a purpose other than the medicinal use or in excess that impair one's physical or psychological functions is known as drug abuse.
Q: From which substance smack and coke are obtained?
A: a) Smack (i.e., heroin) is obtained by acetylation of morphine (Morphine is obtained from dried latex of unripe pod of poppy plant).
b) Coke is obtained from the leaves of coca plant (Erythroxylum coca).
Q: What are the two chief morphological body forms of cnidarians? What are their chief functions?
A: a) Cnidarians have two chief morphological body forms. They are polyp and medusa.
b) Polyps are sessile, cylindrical forms and reproduce asexually.
Medusae are free swimming umbrella like forms and reproduce sexually.
Q: What are the excretory cells of flatworms? What is the other important function of these specialised cells?
A: a) Flame cells/ Protonephridia.
b) Osmoregulation.
Q: What is the function of radula? Give the name of the group of molluscs which do not possess a radula.
A: a) Food collection / Feeding.
b) Pelecypoda / Bivalvia.
Q: What are claspers? Which group of fishes possess them?
A: a) The copulatory processes developed on pelvic fins of male cartilagenous fishes are called claspers.
b) Chondrichthys.
Q: What are pneumatic bones? How do they help birds?
A: a) The bones with air cavities are known as pneumatic bones. They are found in birds.
b) Pneumatic bones make the endoskeleton light (one of the flight adaptations).
Q: Name the three meninges. In which group of animals do you find all of them?
A: a) Outer duramater, middle arachnoid mater and inner piamater.
b) Mammalia.
A: The tendency of microfilariae to reach peripheral circulation only during night time (10 P.M. to 4 A.M.) is known as nocturnal periodicity.
Q: Write scientific names of any two plants with hallucinogenic properties.
A: Atropa belladona, Datura
Q: Define drug abuse.
A: When a chemical substance (i.e., drug) is taken for a purpose other than the medicinal use or in excess that impair one's physical or psychological functions is known as drug abuse.
Q: From which substance smack and coke are obtained?
A: a) Smack (i.e., heroin) is obtained by acetylation of morphine (Morphine is obtained from dried latex of unripe pod of poppy plant).
b) Coke is obtained from the leaves of coca plant (Erythroxylum coca).
Q: What are the two chief morphological body forms of cnidarians? What are their chief functions?
A: a) Cnidarians have two chief morphological body forms. They are polyp and medusa.
b) Polyps are sessile, cylindrical forms and reproduce asexually.
Medusae are free swimming umbrella like forms and reproduce sexually.
Q: What are the excretory cells of flatworms? What is the other important function of these specialised cells?
A: a) Flame cells/ Protonephridia.
b) Osmoregulation.
Q: What is the function of radula? Give the name of the group of molluscs which do not possess a radula.
A: a) Food collection / Feeding.
b) Pelecypoda / Bivalvia.
Q: What are claspers? Which group of fishes possess them?
A: a) The copulatory processes developed on pelvic fins of male cartilagenous fishes are called claspers.
b) Chondrichthys.
Q: What are pneumatic bones? How do they help birds?
A: a) The bones with air cavities are known as pneumatic bones. They are found in birds.
b) Pneumatic bones make the endoskeleton light (one of the flight adaptations).
Q: Name the three meninges. In which group of animals do you find all of them?
A: a) Outer duramater, middle arachnoid mater and inner piamater.
b) Mammalia.
SSC Public Exams - Biology Important Questions
Q: Collect information about respiratory diseases (because of pollution, tobacco) and discuss with your classmates. (4 Marks)
A: We see people suffering from respiratory diseases. They suffer from breathing problems and problems in lungs. We get respiratory diseases due to many reasons. I went into our community along with my friends to interview our community people about respiratory diseases and the reasons behind these diseases. We interviewed 50 people and came to know the different respiratory diseases and their reasons. We also interviewed a pulmonologist to know more about the diseases and reasons for these diseases.
A: We see people suffering from respiratory diseases. They suffer from breathing problems and problems in lungs. We get respiratory diseases due to many reasons. I went into our community along with my friends to interview our community people about respiratory diseases and the reasons behind these diseases. We interviewed 50 people and came to know the different respiratory diseases and their reasons. We also interviewed a pulmonologist to know more about the diseases and reasons for these diseases.
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