Koel is clever enough to lay eggs in a Crow's nest. Write the reason for this peculiar behaviour. Name the type of interaction.

Koel or Cuckoo lays eggs in the nest of

Study the following Crows make their nests high up on a tree using all kinds of things, even pieces of wood and wires. A clever bird who does not make its own nest lays eggs in a crow's nest. The poor crow batches them along with its own eggs, Which bird is this?

a) Arrange benzene, n-hexane and ethyne in decreasing order of acidic behaviour. Also give reason for this behaviour. b) Write the structural formulae and IUPAC names for all the structural isomers of alkenes with molecular formula C_(5)H_(10) . c) Write the various types of isomerism shown by alkenes. Give one example of each.

Given below is a table depicting population interactions between SQPecies A and SQPecies B. {:("Type of interaction","SQPecies A","SQPecies B"),((a),(-),"(+)"),((b),"(+)",(-)):} Name the type of interactions (a) and (b) in the above table. Justify giving three reason, how the type of interaction (b) is important in an ecological context

Charu is a chartered accounted in Prakash Ltd. During the coures of meeting with directors she came to know that as against the previous years, this year company is going to declare handsome dividend offer. It is observed that when such news becomes public then the share market jumps up. Considering it, Charu purchased large number of company's shares before this news reached the public. (1) Identify the type of malpracties used by Charu. (2) Name the authority which regulates such behaviour. Write any three other funtions of this authoity.

Two types to aquatic organisms in a lake show specific growth patterns as shown below, in a brief period of time. The lake is adjacent to an agricultural land extensively with fertilizers. Answer the question based on the facts given above : (i) Name the organisms depicting the patterns A and B. (ii) State the reason for the growth pattern seen in A. (iii) Write the effects of the growth patterns seen above.

Charu is a chartered accountant in Parkash Ltd. During the coures of meeting with directors, she came to know that as against the previous years, this year company is going to declare handsome dividend offer. It is observed that when scuh news becomes public then the share-market jumps up. Considering it, Charu purchased large number of company's shares before this news reached the public. (1) Identify the type of malpractice used by Charu. (2) Name the authority which reguates such behaviour. Write any three other functions of this autherity.