Animal Kingdom: Class 11 Biology Q&A
10 free answers on Animal Kingdom (Biology) for Class 11 students, across CBSE, ICSE and State boards. Includes questions such as “What is coelom in biology?”, “What is metamerism in biology”, “Define birds. Give two examples of flightless birds.”
Question & Answer
Questions
- BiologyClass 11All
What is coelom in biology?
Organisms have some internal cavities which contain the organs inside it. Not all organs have clear cavities with well defined spaces. Instead lower organisms lack any kind of cities and are called Acoelomate such as porifera,Platyhelminthes. Phylum-like nematodes are pseudocoelomates having partial cavities inside. Phylum after nematoda , like Annelids, arthropods, vertebrates all are coelomates i.e have well defined cavities between the body wall and digestive tracts. Coelomates are
- BiologyClass 11All
What is metamerism in biology
Metamerism is a phenomenon that is seen in some phyla like Annelida. It is a biological occurrence in which growth occurs by forming linear and fundamentally similar structures. Animals that possess such metamerism are called metamerically segmented. In animals, these metamers are called somites, whereas in plants it called phytomers. These metamers or somites are formed based on identical structures or fundamental organisation. First evidence of the metamerism: It was first o
- BiologyClass 11All
Define birds. Give two examples of flightless birds.
Birds (Class Aves) are warm-blooded, egg-laying vertebrates characterized by: Defining features: Feathers - Unique to birds, providing insulation and enabling flight Wings - Modified forelimbs (though not all birds fly) Beaks/Bills - Without teeth Four-chambered heart - Efficient circulatory system Hollow
- BiologyClass 11All
Name all phyla which are included in Kingdom Animalia.
The major phyla of Kingdom Animalia include: Non-chordates (Invertebrates): Porifera - Sponges Coelenterata/Cnidaria - Jellyfish, corals, hydra Platyhelminthes - Flatworms Nematoda/Aschelminthes - Roundworms Annelida - Segmented worms (earthworms, leeches) Arthropoda - Insects, spiders,
- BiologyClass 11All
1. Which organisms have bilateral and radial symmetry?
Bilateral symmetry is found in organisms where the body can be divided into two identical halves along only one plane. Examples include humans, butterflies, earthworms, and most vertebrates. Radial symmetry occurs in organisms whose body parts are arranged around a central axis, allowing division into similar halves through multiple planes. Common examples are jellyfish (Aurelia), sea anemones, starfish, and hydra. These symmetry patterns reflect evolutionary
- BiologyClass 11All
Does silverfish belong to class Pisces?
No, silverfish does not belong to class Pisces. Despite its misleading common name, the silverfish (Lepisma saccharina) is an insect belonging to the order Thysanura within class Insecta and phylum Arthropoda. It's called "silverfish" due to its silvery, metallic appearance and fish-like movement, but it's a small, wingless insect commonly found in homes, feeding on carbohydrates like paper, glue, and starch.
- BiologyClass 11All
What does the word 'Arthropoda' mean?
The term Arthropoda derives from Greek words: "arthron" meaning jointed and "podos" meaning feet or legs. Thus, Arthropoda literally translates to "jointed legs" or "jointed feet." This name perfectly describes the phylum's defining characteristic—segmented bodies with paired, jointed appendages. Arthropods represent the largest and most diverse animal phylum, including insects, spiders, crustaceans, and centipedes. The
- BiologyClass 11All
Name two egg-laying mammals.
The two primary examples of egg-laying mammals (monotremes) are: Platypus (Ornithorhynchus anatinus) - A semi-aquatic mammal native to eastern Australia with a duck-like bill, beaver tail, and venomous spurs Echidna (Tachyglossus aculeatus) - Also called spiny anteaters, found in Australia and New Guinea These remarkable mammals represent the most primitive living mammalian group, combining reptilian c
- BiologyClass 11All
Name two groups of warm-blooded animals with four-chambered hearts.
The two groups of warm-blooded (endothermic) animals with four-chambered hearts are: Birds (Class Aves): Including eagles, sparrows, penguins, ostriches, and all other avian species Mammals (Class Mammalia): Including humans, whales, bats, elephants, and all other mammalian species The four-chambered heart (two atria and two ventricles) allows complete separation of ox
- BiologyClass 11All
Which organisms have bilateral and radial symmetry?
Bilateral symmetry is found in organisms where the body can be divided into two identical halves along only one plane. Examples include humans, butterflies, earthworms, and most vertebrates. Radial symmetry occurs in organisms whose body parts are arranged around a central axis, allowing division into similar halves through multiple planes. Common examples are jellyfish (Aurelia), sea anemones, starfish, and hydra. These symmetry patterns reflect evolutionary