PART - 2 - Unit V : CH - 15 Body Fluids and Circulation — BIOLOGY STD 11 Science — Question

What do you understand by photoperiodism and vernalisation? Describe their significance.

Name and differentiate between the two types of synapses.

Explain, why a pair of homologous chromosomes is genetically different, but a pair of sister chromatids is genetically identical before crossing over in meiosis.

Mention the important series of events of aerobic respiration that occur in the matrix of the mitochondrion and in the inner membrane of the mitochondrion.

Once Amit's teacher took his class to an educational tour where they saw people manufacturing leather from the skin of different animals by the tanning process. Amit found this an interesting process and asked many questions regarding this. After knowing the process, he argued that it is unethical and illegal to use animals for obtaining leather. The teacher appreciated Amit for his action.

1. Which features of this tissue are useful to obtain leather?
2. Name the kind of dense connective tissue involved in this.
3. Write any two unique features of this tissue.
4. What values of Amit are reflected from the above discussion?

Differentiate between Aerobic respiration and Fermentation.

When and where does reduction division take place in the life cycle of a liverworts, a moss, a fern, a gymnosperm and an angiosperm?

Cardiac muscles are contractile muscles present in heart.

1. What is their structure?
2. Write their special features.
3. Find the value in non-tiring nature of cardiac muscles.

Describe economic importance of the largest phylum.

Match the items of column I with those of column II:

	Column I		Column II
(a)	Ammonotelism	(i)	Birds
(b)	Bowman’s capsule	(ii)	Water reabsorption
(c)	Micturition	(iii)	Bony fish
(d)	Uricotelism	(iv)	Urinary bladder
(e)	ADH	(vii)	Renal tubule