Reptilia include animals which are cold-blooded, have scales and breathe through lungs. These include:
[amp_mcq option1=”Fishes and Snakes” option2=”Frogs and Snakes” option3=”Crow and Fishes” option4=”Snakes and Turtles” correct=”option4″]
Which one of the following is correct with regards to animals with bilateral symmetry, triploblastic body and true body cavity?
[amp_mcq option1=”Roundworm, earthworm and leech” option2=”Earthworm, leech and nereis” option3=”Ascaris, round worm and earthworm” option4=”Earthworm, sea cucumber and sea urchin” correct=”option2″]
Which one of the following represents the correct hierarchical sequence of taxonomic categories in ascending order?
[amp_mcq option1=”Species $\rightarrow$ Genus $\rightarrow$ Order $\rightarrow$ Family $\rightarrow$ Class” option2=”Genus $\rightarrow$ Species $\rightarrow$ Order $\rightarrow$ Family $\rightarrow$ Class” option3=”Species $\rightarrow$ Genus $\rightarrow$ Family $\rightarrow$ Order $\rightarrow$ Class” option4=”Species $\rightarrow$ Genus $\rightarrow$ Order $\rightarrow$ Family $\rightarrow$ Class” correct=”option3″]
Which of the following organisms are included in Kingdom Protista as given by R Whittakar?
[amp_mcq option1=”Nostoc, mycoplasma and protozoans” option2=”Bacteria, amoeba and protozoan” option3=”Anabaena, bacteria and paramecium” option4=”Unicellular algae, diatoms, slime moulds and protozoans” correct=”option4″]
Animals which are marine, bilaterally symmetrical, have a coelom and a notochord, but never form a vertebral column are placed under which one of the following groups?
[amp_mcq option1=”Chordata” option2=”Protochordata” option3=”Vertebrata” option4=”Mammalia” correct=”option2″]
The description fits the characteristics of Protochordata, which include Urochordata (Tunicates) and Cephalochordata (Lancelets). These are marine, bilaterally symmetrical coelomates that possess a notochord at some stage of their life cycle, but they do not develop a vertebral column (backbone), which is characteristic of Vertebrata.
Protochordata is a group within the phylum Chordata characterized by having a notochord but lacking a vertebral column.
The phylum Chordata is broadly divided into Protochordata (also treated as subphyla Urochordata and Cephalochordata) and Vertebrata. Vertebrata are chordates where the notochord is replaced by a bony or cartilaginous vertebral column in the adult stage. Mammalia is a class within Vertebrata.
Rupa and Sachin observed an animal in their school garden. Rupa called it an insect while Sachin identified it as an earthworm. Which one of the following characteristics confirms that it is an insect?
[amp_mcq option1=”The animal had jointed legs.” option2=”Body of the animal had very little segmentation.” option3=”Body of the animal was cylindrical.” option4=”Body of the animal was bilaterally symmetrical.” correct=”option1″]
Insects belong to the phylum Arthropoda, a defining characteristic of which is the presence of jointed legs. Earthworms belong to the phylum Annelida and do not have jointed legs; their locomotion relies on bristles (setae) and muscular contractions.
Jointed legs are a characteristic feature of arthropods, including insects, arachnids, crustaceans, etc., which differentiates them from annelids like earthworms.
While both insects and earthworms have segmented bodies and are bilaterally symmetrical, these characteristics are common to many animal groups and do not uniquely identify an insect versus an earthworm. Insect bodies are typically divided into three distinct segments (head, thorax, abdomen), whereas earthworm segmentation is more uniform rings along the body.
All the individuals of a particular organism, such as rose plants, belong to a taxonomic category called
[amp_mcq option1=”species” option2=”genus” option3=”family” option4=”order” correct=”option1″]
Under the Kingdom Plantae, which of the following individuals are predominantly aquatic?
[amp_mcq option1=”Bryophytes” option2=”Algae” option3=”Pteridophyta” option4=”Gymnosperms” correct=”option2″]
Marsilea, Fern and Horse-tail are examples of which one of the following plant groups ?
[amp_mcq option1=”Pteridophyta” option2=”Bryophyta” option3=”Gymnosperms” option4=”Angiosperms” correct=”option1″]
Hyphae are :
[amp_mcq option1=”produced by yeast.” option2=”thin threads formed by many fungi.” option3=”reproductive cells.” option4=”responsible for preventing the cell from losing water in wet conditions.” correct=”option2″]