Find the correct combination-IIIa-Entrie leaf with stipules modified into spinesi -10- -10- -10- -9- -10- -9- -10- -9- -10- -9- -10- -10- -10-Clematis -10- -10-b-Leaf except stipules modified into tendriliiCitrusc-Stipules modified into tendrilsiii -10- -10- -10- -9- -10- -9- -10- -9- -10- -9- -10- -10- -10-Euphorbia -10- -10-d-First leaf of axillary bud modified into spineiv -10- -10- -10- -9- -10- -9- -10- -9- -10- -9- -10- -10- -10-Lathyrus -10- -10-v -10- -10- -10- -9- -10- -9- -10- -9- -10- -9- -10- -10- -10-Smilax -10- -10-a-iii- b-i- c-iv- d-iia-ii- b-iii- c-i- d-va-iii- b-iv- c-v- d-iia-v- b-ii- c-i- d-iii

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Modifications of Leaf

Find the corr...

Question

Find the correct combination.
I II
a. Entrie leaf with stipules modified into spines i
Clematis

b. Leaf except stipules modified into tendril ii Citrus
c. Stipules modified into tendrils iii
Euphorbia

d. First leaf of axillary bud modified into spine iv
Lathyrus

v
Smilax

a-iii, b-i, c-iv, d-ii

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a-ii, b-iii, c-i, d-v

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a-v, b-ii, c-i, d-iii

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a-iii, b-iv, c-v, d-ii

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Solution

The correct option is C a-iii, b-iv, c-v, d-ii
There are various parts of leaf that modifies into tendrils in plants. In plants, either entire leaf, upper leaflets, terminal leaflet, petiole or stipule gets modified into tendril. In Smilax, the stipule is modified into tendril. In Clematis, the petiole is modified into tendril. Tendril performs the function of support and attachment. In Citrus, the first leaf of axillary bud is modified into spine. In Euphorbia, the entire leaf with stipules are modified into spines. Spines perform function of protection.
Thus, the correct answer is 'a-iii, b-iv, c-v, d-ii.'

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__________(stem/leaf) is modified into spines in cactus.

Question 5
Find out the correct sentence

(i) Hybridization means crossing between genetically dissimilar plants
(ii) Cross between two varieties is called as interspecific hybridization
(iii) Introducing genes of the desired character into a plant gives a genetically modified crop
(iv) Cross between plants of two species is called as inter varietal hybridisation

(a) (i) and (iii)
(b) (ii) and (iv)
(c) (ii) and (iii)
(d) (iii) and (iv)

Q. Which of the following statements is/are correct for Euphorbia?
(i) Leaves modified into spines
(ii) Stem modified into leaf like organ
(iii) Cyathium inflorescence
(iv) Ratio of male and female flowers is one to many respectively

Q. The stipules are modified into a pair of spines in

Q. Stipules are modified into spines in

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	I		II
a.	Entrie leaf with stipules modified into spines	i	Clematis
b.	Leaf except stipules modified into tendril	ii	Citrus
c.	Stipules modified into tendrils	iii	Euphorbia
d.	First leaf of axillary bud modified into spine	iv	Lathyrus
		v	Smilax

Find the correct combination.IIIa.Entrie leaf with stipules modified into spinesi Clematis b.Leaf except stipules modified into tendriliiCitrusc.Stipules modified into tendrilsiii Euphorbia d.First leaf of axillary bud modified into spineiv Lathyrus v Smilax

Find the correct combination.
I II
a. Entrie leaf with stipules modified into spines i
Clematis

b. Leaf except stipules modified into tendril ii Citrus
c. Stipules modified into tendrils iii
Euphorbia

d. First leaf of axillary bud modified into spine iv
Lathyrus

v
Smilax