If you touch a piece of iron and a piece of wood laying exposed to the heat of the sun, which one feels hotter and why

Explain why a piece of metal feels cooler than a piece of wood in winter.

Pieces of copper and glass are heated to the same temperature. Why does the piece of copper feel hotter on touching ?

It is a common method of vegetative propagation in which 20-30 cm long pieces of one year old stems are cut, their lower ends are dipped in root promoting hormones and are then planted in the soil, which then develop adventitious roots. This method of vegetative propagation is performed in

Consider the following three statements related to the human male reproductive system and select the correct option stating which ones are true (T) and which ones are false (F). (i) Middle piece of spermatozoon is also termed as power house of spermatozoon. (ii) Vas deferens joins a duct from seminal vesicle and form vasa efferentia. (iii) Semen is a collection of secretions from the seminal vesicles, prostate gland and Cowper's glands and sperms from testes.

Why rusting of iron pipe can be prevented by joining it with a piece of magnesium?

Study the following statements regarding recombinant DNA technology and select the incorrect ones. (i) Taq polymerase extends the primers using the nucleotides provided in the reaction. (ii) Antibiotic resistance genes are considered as desirable genes in recombinant DNA technology. (iii) DNA fragments are separated according to their charge only, in agarose gel electrophoresis. (iv) Transformation is a procedure through which a piece of DNA is integrated in to the genome of a host bacterium. (v) To produce higher yields of a desired protein, host cells can be multiplied in a continuous culture. (vi) Downstream processing is one of the steps of polymerase chain reaction.

Explain why iron is colder to touch than wood in winter.

If one can induce parthenocarpy through the application of growth substances, which fruits would you select to induce parthenocarpy and why?