Which of the following is a correct characteristic of reptiles?
Reptiles are uricotelic, meaning they excrete uric acid to conserve water.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Hemichordata and Chordata - Protochordata
Phylum Hemichordata and Chordata - Protochordata
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Which structure in hemichordates is functionally similar to the notochord?
The stomochord in hemichordates is a rod-like structure that functions similarly to the notochord.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Hemichordata and Chordata - Protochordata
Which of the following statements about vertebrates is correct?
Vertebrates include both jawless (Cyclostomata) and jawed (Gnathostomata) animals.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Hemichordata and Chordata - Protochordata
Which of the following statements about birds is incorrect?
Birds do not have a diaphragm; instead, they use air sacs to assist in respiration.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Hemichordata and Chordata - Protochordata
Which of the following statements about arthropods is correct?
Arthropods are characterized by the presence of jointed appendages, which aid in movement and other functions.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Hemichordata and Chordata - Protochordata
Which of the following statements about fishes is incorrect?
Most fishes breathe through gills, not lungs, though some, like lungfish, have specialized respiratory adaptations.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Hemichordata and Chordata - Protochordata
Which of the following features is a synapomorphy of Chordata?
Pharyngeal gill slits are a defining characteristic of chordates, present in some stage of their development.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Hemichordata and Chordata - Protochordata
Which of the following animals belongs to the phylum Hemichordata?
Balanoglossus is a hemichordate, characterized by a proboscis, collar, and trunk.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Hemichordata and Chordata - Protochordata
Which of the following statements about hemichordates is incorrect?
Hemichordates have a stomochord, which is similar in function but not homologous to the notochord.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Hemichordata and Chordata - Protochordata
Which structure in molluscs is responsible for secreting the shell?
The mantle in molluscs is a soft tissue layer that secretes the calcareous shell.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Hemichordata and Chordata - Protochordata
Which of the following statements about reptiles is correct?
Reptiles lay amniotic eggs, which help protect the embryo from desiccation.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Hemichordata and Chordata - Protochordata
Which feature is unique to phylum Hemichordata?
Hemichordates have a body divided into three parts: proboscis, collar, and trunk.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Hemichordata and Chordata - Protochordata