Both Annelida (e.g., earthworms) and Arthropoda (e.g., insects, crustaceans) exhibit metameric or segmented body plans, where the body is divided into distinct segments or repeating units along the length of the organism. This segmentation allows for greater flexibility and specialization of body parts.
So, the correct option is (C): Annelida and Arthropoda.
Class | Character | Example |
---|---|---|
1) Xiphosura | Poisonous Claws | Limulus |
2) Arachnida | Coxal Glands | Scutigera |
3) Crustacea | Biramous appendage | Sarcoptes |
4) Diplopoda | Gnathochilarium | Spirostreptus |
The current passing through the battery in the given circuit, is:
A bob of heavy mass \(m\) is suspended by a light string of length \(l\). The bob is given a horizontal velocity \(v_0\) as shown in figure. If the string gets slack at some point P making an angle \( \theta \) from the horizontal, the ratio of the speed \(v\) of the bob at point P to its initial speed \(v_0\) is :
A full wave rectifier circuit with diodes (\(D_1\)) and (\(D_2\)) is shown in the figure. If input supply voltage \(V_{in} = 220 \sin(100 \pi t)\) volt, then at \(t = 15\) msec:
The term ‘biodiversity’ is derived from the two words- ‘bios' which means life and ‘diversity’ i.e, differentiation or variation. Edward Wilson, the sociobiologist was the first to popularise the term ‘biodiversity’ in the year 1992. The term implies the occurrence of various plants and animals along with their variants such as biotypes, ecotypes and genes on earth. In our biosphere, the immense diversity or heterogeneity remains not only at the species level but also, at every level of biological organization that ranges from macromolecules in the cells to biomes.
Biodiversity and Conservation is a topic covered under the fifteenth chapter and Unit 5 of NCERT class 12 biology.