Question: Who wrote the book “The Origin of Species”?
Answer: Charles Darwin in 1859.
Question: Who proposed the classification of organisms into 5 kingdom?
Answer: Robert Whittaker (1959).
Question: Define species.
Answer: All organisms that are similar to breed and perpetuate.
Question: Give example of the organism belonging to Monera and Protista Kingdom.
Answer: Monera—Anabaena, blue-green algae, Protista—Eugleno, Paramecium, Amoeba
Question: Name the appendages used for movement by organism belonging to Protista kingdom.
- Paramecium – Cilia
- Euglena – Flagella
- Amoeba – Pseudopodia
Question: What is lichen?
Answer: The symbiotic association of fungi and blue-green algae is called lichen.
Question: What is symbiotic relationship?
Answer: It is a relationship between two organisms in which both of them are benefitted, e.g., fungi gets food from blue-green algae and in return blue-green gets shelter [lichens].
Question: What is saprophytic nutrition?
Answer: The organisms using dead and decaying organic matter as food are said to show saprophytic nutrition.
Question: Name the plant amphibian.
Answer: Biyophyta e.g. Funaria (Moss).
Question: What are cryptogamae?
Answer: The plants with inconspicuous reproductive organs are called cryptogamae, e.g. fern.
Question: Give examples of pteridophyte.
Answer: Marsilea and Fern.
Question: Name the reproductive organ of plants.
Question: What are gymnosperms?
Answer: The group of plants that bear naked seeds e.g., pines, deodar.
Question: What are angiosperms?
Answer: The group of plants with covered seeds are called angiosperms. These are flowering plants.
Question: What are cotyledons?
Answer: Plant embryos in seeds have structures called cotyledons. Cotyledens are also known as seed leaves.
Question: Name the phylum of an animals with pores on it.
Answer: Porifera e.g., sponge.
Question: Name the phylum of Jellyfish
Answer: Coelenterata or Cnidaria.
Question: What is the meaning of triploblastic?
Answer: Animals which have three layers of cells from which differentiated tissues -can be made.
Question: What is bilateral symmetry?
Answer: When the left and right halves of the body have same design it is called bilateral symmetry.
Question: What is the meaning of “cold-blooded animal”?
Answer: Those animals who show the variation in their body temperature according to the surroundings are called cold-blooded animals, e.g., fish, amphibians, reptiles.
Question: Name two mammals that lay eggs.
Answer: Platypus and echidna.
Question: Name three mammals that live in water.
Answer: Whale, platypus and Dolphins.
Question: Name a fish with skeleton made up of cartilage.
Question: Name two fish which have skeleton made up of both bone and cartilage.
Answer: Tuna and rohu.
Question: Name the reptile with four-chambered heart.
Question: Why do we classify organisms?
Answer: For easier and convenient study we classify organisms.