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Types of Metamorphosis. There are three kinds of metamorphosis: ametabolism, hemimetabolism and holometabolism. All the three kinds can be seen in insects. Let us discuss them one by one. Ametabolism. It is a type of growth or life cycle in which there is little or no metamorphosis at all. It is observed in primitive wingless insects such as ...
Metamorphosis: When the young one does not resemble the adult, such a young one is known as a larva or nymph, it is known as indirect development. The change from nymph or larva to adult is called metamorphosis. The transformation of a larva into an adult is characterized by a series of sudden morphological, physiological, and behavioral changes.
Complete metamorphosis comprised of a very active, ferociously eating larva and an inert pupa. Three phases comprise incomplete metamorphosis: egg, nymph, and adult. The four phases of complete metamorphosis are egg, larva, pupa, and adult. Incomplete metamorphosis permits some of the insect’s exoskeleton to persist throughout its life cycle.
Metamorphism in Frogs. Metamorphism is a hormonal effect. Metamorphism in frogs is controlled by the hormones called thyroxine, and it is produced by the gland called the thyroid. For the production of thyroxine, the thyroid gland needs iodine. Frogs need to live in water bodies where sufficient iodine is present for thyroxine production.
Hemimetabolous. It refers to insects that show incomplete metamorphosis or hemimetabolism. Their life cycle includes egg, nymph, imago or adult. The pupal stage is absent. The nymphs or naiads undergo gradual metamorphism and turn into adults. There are many hemimetabolous insects like grasshoppers, praying mantises, mayflies, damselflies, etc.
Complete Metamorphosis. As stated before, fleas go through complete metamorphism, which means it has four stages in its life cycle, namely: Egg stage. Larvae stage. Pupa stage. Adult stage. Typically, fleas go through these stages in 14 to 140 days depending on the weather conditions and other environmental factors.
Unlike other insects that fly, dragonflies don’t have the pupa stage in their life cycle, and therefore have incomplete metamorphosis. Incomplete metamorphism occurs when there is an absence of the pupa stage. In complete metamorphism, there are all the stages – egg, the larva, the pupa and the adult. Dragonflies are also called ...
The grasshopper undergoes incomplete metamorphosis. The three stages from conception to adult in a grasshopper’s life cycle are as follows: The Egg: After fertilization, the female grasshopper lays the eggs either underneath the soil or on leaf litters. The female then sprays a sticky substance on the eggs to form an egg pod. An egg pod ...
Life Cycle of a Butterfly. 1) The Egg – Stage 1: The female butterfly lays the egg on the surface of a leaf or a stem. The egg is tiny, oval or cylindrical and varies in colour. The popular larvae form of a butterfly known as the caterpillar gradually grows inside the egg. These eggs hatch according to the favourable conditions outside, if it ...
Solution. The correct option is B Earthworm. Direct development refers to the process of development in which an animal is born in a smaller version of its adult form. There is no larval stage and hence no metamorphosis in case of direct development. Development in earthworms is direct and does not involve metamorphosis.
