Animal Kingdom | Unit Test - 4 Sets of PDF QPs in one page with answer key I Class 11

➡️ Unit Test - 4 Sets of PDF QPs Download

Set A (Max. score: 15)

1. True coelom is lined by ………………. (1)
2. Name a fresh water sponge. (1)
3. Mention any 2 salient features of Aschelminthes. (2)
4. A marine invertebrate has endoskeleton of calcareous ossicles (spiny bodied) and water vascular system.
   1. Identify the animal and write its phylum.
   2. Write any 2 functions of water vascular system. (2)
5. Distinguish between Urochordata and Cephalochordata. Give one example for each. (2)
6. Shark has to swim continuously, otherwise it will sink down. Give reason. (2)
7. Analyze the following diagram. (2)

   

   1. Identify the figure and the phylum.
   2. Mention its functions (any two).
8. Complete the table: (3)

   Phyla	Excretory organ	Example
   Platyhelminthes	……A…….	Tapeworm
   ……B…….	……C…….	Nereis
   ……D…….	Malpighian tubules	Cockroach
   Hemichordata	……E…….	……F…….

Set A - ANSWER KEY

1. Mesoderm
2. Spongilla
3. • Pseudocoelomate.
   • Tubular alimentary canal with well-developed muscular pharynx.
   • Dioecious (sexes are separate).
   • Body is circular in cross section.
   • An excretory tube to remove body waste through excretory pore.
   • Male & female are distinct.
   (Any two)
4. 1. Echinodermata.
   2. Locomotion, respiration, capture & transport of food.
5. Urochordata: Notochord present only in larval tail. Hermaphrodite. E.g. Ascidia, Salpa, Doliolum.
   Cephalochordata: Notochord from head to tail region and is persistent throughout the life. Sexes are separate. E.g. Branchiostoma (Amphioxus or Lancelet).
6. Shark belongs to Chondrichthyes. It has no airbladder for buoyancy. So it needs to swim continuously.
7. 1. Cnidoblast/Stinging cell. Phylum Cnidaria
   2. Anchorage, defense and to capture prey
8. A= Flame cells/Protonephridia
   B= Annelida
   C= Nephridia
   D= Arthropoda
   E= Proboscis gland
   F= Balanoglossus/Saccoglossus

Set B (Max. score: 15)

1. In diploblastic condition, a jelly-like substance called ……… is present between ectoderm and endoderm. (1)
2. Note the relationship between first two words and fill up the fourth place. (1)
   Osteichthyes: Cycloid scales :: Chondrichthyes: ……………
3. Mention any 2 salient features of Annelida. (2)
4. Briefly explain water canal system in sponges. (2)
5. Snakes do not have limbs but lizards have. But both are included under same class.
   1. Name the class.
   2. Give reason for including them under same class. (2)
6. List out any 4 avian adaptations of birds. (2)
7. Find the odd one out. Justify your answer. (2)
   Flying fish, Sea horse, Hagfish, Angel fish
8. Observe the following diagram. (3)

   

   1. Identify the diagram.
   2. Label A, B, C & D.

Set B - ANSWER KEY

1. Mesoglea
2. Placoid scales
3. • Cutaneous respiration.
   • Metamerically segmented body like rings.
   • Longitudinal and circular muscles help in locomotion.
   • Excretion by Nephridia.
   • Paired ganglia connected by lateral nerves to a double ventral nerve cord.
   • Aquatic annelids like Nereis have lateral appendages (parapodia) for swimming.
   (Any two).
4. Water canal system: Here, water enters through minute pores (ostia) in the body wall into a central cavity (spongocoel), from where it goes out through osculum.
   Canal system is used for food gathering, gas exchange and removal of wastes.
5. 1. Reptilia.
   2. Both have Dry & cornified skin, Epidermal scales, Crawling mode of locomotion, Respiration through lungs, Internal fertilization etc. (Any 3 reasons)
6. • Presence of wings and beak.
   • Pneumatic bones.
   • Air sacs connected to lungs.
   • Dry and non-glandular skin.
7. Hagfish. It belongs to class Cyclostomata. Others belong to Osteichthyes.
8. 1. Chordata characteristics.
   2. A= Nerve cord      B= Notochord
      C= Pharyngeal gill slits      D= Post-anal part

Set C (Max. score: 15)

1. Name the phylum that shows only cellular level of organisation. (1)
2. The ability of Ctenophores to emit light from their body is called ………………. (1)
3. Mention any 2 salient features of Arthropoda. (2)
4. Distinguish between Chordata and Non-chordata. (2)
5. Why is the seahorse classified as a bony fish despite having a body shape different from ordinary fish? (2)
6. Match the following. (2)

   Tetrapoda classes	Examples
   Amphibia	Ornithorhynchus
   Reptilia	Psittacula
   Aves	Rana
   Mammalia	Testudo

7. Distinguish diploblastic and triploblastic conditions. (2)
8. Observe the diagram. (3)

   

   1. Identify the two forms A and B.
   2. Mention any two differences between them.
   3. Of these, which is more advanced? Give reason.

Set C - ANSWER KEY

1. Porifera.
2. Bioluminescence
3. Salient features of Arthropoda:
   • Jointed appendages.
   • Body has 3 regions: head, thorax & abdomen.
   • Body is covered by chitinous cuticle (exoskeleton).
   • Excretion by Malpighian tubules.
   • Sensory organs are antennae, compound & simple eyes, statocysts (balance organs).
   • Respiratory organs: Gills/book gills/trachea/book lungs
   (Any two).
4. Chordata and Non-chordata – comparison:

   Chordata	Non-Chordata
   i. Notochord is present.	Absent
   ii. Central nervous system is dorsal, hollow & single.	Ventral, solid & double
   iii. Pharynx perforated by gill slits.	Absent
   iv. Post-anal part (tail) is present.	Absent
   v. Ventral heart	Dorsal heart

5. Seahorse is classified as a bony fish because it has a bony skeleton, breathes through gills covered by an operculum, and has fins and terminal mouth.

6. Tetrapoda classes	Examples
   Amphibia	Rana
   Reptilia	Testudo
   Aves	Psittacula
   Mammalia	Ornithorhynchus

7. Diploblastic: 2 germinal layers- outer ectoderm and inner endoderm. In between these layers, an undifferentiated jelly-like layer called mesoglea is present. E.g. Cnidaria & Ctenophora.
   Triploblastic: 3 germinal layers- Outer ectoderm, middle mesoderm and inner endoderm. E.g. Platyhelminthes to Chordata.
8. 1. A= Medusa      B= Polyp
   2. Polyp is cylindrical & sessile. E.g. Hydra, Adamsia.
      Medusa is umbrella like, free-swimming. E.g. Aurelia.
   3. Medusa. Because it represents the sexual stage.

Set D (Max. score: 15)

1. Name the phylum that shows pseudocoelomate condition. (1)
2. Name the excretory structure of flatworms. (1)
3. Define: (2)
   1. Metagenesis
   2. Metamerism
4. Mention any 2 salient features of Hemichordata. (2)
5. An animal has 3-chambered heart and moist skin without scales.
   1. Identify its phylum and class.
   2. Name any 2 animals under this class. (2)
6. Identify the phyla: (2)
   1. Pore bearing organisms with choanocytes.
   2. Soft body covered with a calcareous shell; mouth contains radula for feeding.
7. Based on symmetry and coelom, odd one out. Justify your answer. (2)
   Ctenophora, Annelida, Arthropoda, Chordata
8. Figure (A) & (B) shows the fishes of two different classes. (3)

   

   1. Name the fishes and identify their classes.
   2. Mention any two differences between them.

Set D - ANSWER KEY

1. Aschelminthes.
2. Flame cells/Protonephridia.
3. 1. Metagenesis
   2. Metamerism
4. • Worm-like cylindrical body formed of anterior proboscis, a collar and a long trunk.
   • Collar bears stomochord.
   • Excretion by Proboscis gland.
   (Any two)
5. 1. Phylum Chordata, Class Amphibia.
   2. Bufo (Toad), Rana (Frog), Hyla (Tree frog), Salamandra, Ichthyophis (Any two)
6. 1. Porifera
   2. Mollusca
7. Ctenophora.
   Ctenophora is radially symmetrical and acoelomate. Others are bilaterally symmetrical and coelomate.
8. 1. A= Scoliodon      Class: Chondrichthyes
      B= Catla      Class: Osteichthyes
   2. Differences: (Any Two)

      Scoliodon	Catla
      Cartilaginous endoskeleton	Bony endoskeleton
      Ventral mouth	Terminal mouth
      Placoid scales	Cycloid scales
      Air bladder absent	Present
      Gill slits without operculum	Gills covered by operculum