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AP Biology Unit 2F1: Animal Cell Biology and Specialization — practice questions

Explore 61 free Unit 2F1: Animal Cell Biology and Specialization questions in AP Biology Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Unit 2F1: Animal Cell Biology and Specialization questions and exercises with answers

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A cylindrical-bodied cnidarian form is given which name?Read the answer and worked solution →Around the mouth of a cnidarian, the tentacles bear cells that inject toxin into prey. These cells are called:Read the answer and worked solution →Flatworms of phylum Platyhelminthes carry both male and female reproductive organs in one body. This condition is termed:Read the answer and worked solution →Ascaris, the filarial worm and Loa loa are examples of which phylum?Read the answer and worked solution →Which phylum is characterised by a long, cylindrical body divided into similar repeating segments, as seen in the earthworm?Read the answer and worked solution →Arthropods are named for which distinguishing body feature?Read the answer and worked solution →Which phylum contains the highest number of animal species, making it the largest phylum in the animal kingdom?Read the answer and worked solution →The hard calcareous shell of a mollusc is secreted by which structure?Read the answer and worked solution →Echinoderms such as the starfish carry out locomotion mainly with the help of which structures?Read the answer and worked solution →An echinoderm shows radial symmetry as an adult but a different symmetry as a larva. What is the larval symmetry?Read the answer and worked solution →Balanoglossus is regarded as the connecting link between non-chordates and chordates. To which phylum does it belong?Read the answer and worked solution →Into how many subphyla is the phylum Chordata divided?Read the answer and worked solution →In the subphylum Vertebrata, what replaces the notochord?Read the answer and worked solution →Petromyzon and Myxine, which have a jaw-less mouth fitted with a sucker, belong to which class?Read the answer and worked solution →In class Pisces, the tail fin chiefly serves which function during swimming?Read the answer and worked solution →A frog lives only in water as a larva but on both land and water as an adult. This life pattern places it in which class?Read the answer and worked solution →According to the course of evolution, which class is regarded as the first group of true terrestrial animals?Read the answer and worked solution →Birds of class Aves are warm-blooded animals. Which term means the same as warm-blooded?Read the answer and worked solution →In class Aves, the exoskeleton is present in which form?Read the answer and worked solution →Which feature is the typical, defining character of class Mammalia?Read the answer and worked solution →The bat, an animal capable of flight, is correctly placed in which class?Read the answer and worked solution →Among the listed animals, which one can regenerate a broken part of its body?Read the answer and worked solution →An animal lives in your small intestine, has a thread-like body and possesses a pseudocoelom. To which phylum does it belong?Read the answer and worked solution →In the subphylum Cephalochordata, the notochord extends over what part of the body?Read the answer and worked solution →The skin of a reptile is best described as:Read the answer and worked solution →Herdmania has a freely swimming larva whose notochord is restricted to the tail region. This places it in which subphylum?Read the answer and worked solution →Which benefit of animal classification is correctly stated?Read the answer and worked solution →During the conversion of milk into yoghurt, lactose sugar is changed into which compound?Read the answer and worked solution →Among common dairy products, which one is produced with the help of fungi rather than bacteria?Read the answer and worked solution →Traditionally, the enzyme rennet for cheese came from the alimentary canal of cattle. Which enzyme from fungi now makes vegetarian cheese possible?Read the answer and worked solution →

Worked practice questions

A cylindrical-bodied cnidarian form is given which name?

  1. Medusa
  2. Polyp
  3. Proboscis
  4. Mantle
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Correct answer: B. Polyp

1. Cnidarians take a cylindrical or umbrella-like body form. 2. The cylindrical form is called the polyp. 3. Rule out medusa: that is the umbrella-like form. _Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 6 "Animal Classification", p.76_

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Around the mouth of a cnidarian, the tentacles bear cells that inject toxin into prey. These cells are called:

  1. Ossicles
  2. Collar cells
  3. Cnidoblasts
  4. Spicules
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Correct answer: C. Cnidoblasts

1. Cnidarian tentacles carry stinging cells around the mouth. 2. These toxin-injecting cells are cnidoblasts. 3. Rule out collar cells: those belong to sponges (Porifera). 4. Ossicles and spicules are skeletal structures, not stinging cells. _Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 6 "Animal Classification", p.76_

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Flatworms of phylum Platyhelminthes carry both male and female reproductive organs in one body. This condition is termed:

  1. Diploblastic
  2. Unisexual
  3. Acoelomate
  4. Hermaphrodite
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Correct answer: D. Hermaphrodite

1. Platyhelminthes hold both reproductive systems in a single individual. 2. Such an animal is hermaphrodite. 3. Rule out unisexual: that means sexes are separate individuals. 4. Acoelomate and diploblastic refer to body cavity and germ layers, not sex. _Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 6 "Animal Classification", p.77_

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