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Praying mentis is a good example of

  • Mullerian mimicry

  • Warning colouration

  • Social insects

  • Social insects


C.

Social insects

Praying mantis (Mantis religiosa) is a large social insect. It has small triangular head, a long prothorax and abdomen consisting of 10 segments. The wings are well developed and the pincer-like forelegs are modified for grasping prey. It usually inhabits plantation areas. It destroys certain harmful insects so it is useful.

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If the mean and the median pertaining to a certain character of a population are of the same value, which of the following is most likely to occur

  • a normal distribution

  • a bi-modal distribution

  • a T-shaped curve

  • a T-shaped curve


A high density of elephant population in an area can result in

  • Mutualism

  • Intraspecific competition

  • Interspecific competition

  • Interspecific competition


Niche overlap indicates

  • active cooperation between two species

  • two different parasites on the same host

  • sharing of one or more resources between the two species

  • sharing of one or more resources between the two species


How does pruning help in making the hedge dense?

  • It induces the differentiation of new shoots from the rootstock

  • It frees axillary buds from apical dominance

  • The apical shoot grows faster after pruning

  • The apical shoot grows faster after pruning


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