Pathogen evades plant by penetration of surface layers directly using mechanical pressure or enzymatic attack, some pass through natural openings, such as stomata or lenticels, and others only enter through wounded tissue. Once inside the plant, one of three main attack strategies is deployed specific feature of interaction given;

A) Necrotrophy

B) Biotrophy

C) Hemibiotrophy

i) where the plant cells remain alive throughout infection

ii) where the plant cells are killed in advance of infection 

iii) extensive plant tissue damage at initial stages

iv) where the pathogen initially keeps cells alive but at later stages of the infection, kills them

Match the following

#Question id: 7176

#Unit 5. Developmental Biology

The metamorphic changes of frog development are brought about by following events.

(A) the secretion of the hormone thyroxine (T4) into the blood by the thyroid gland

(B) the degradation of T3 in the target tissues

(C) the conversion of (T4) into the more active hormone, triiodothyronine (T3) by the target tissues

Which of the following series is correct?

#Question id: 7177

#Unit 5. Developmental Biology

Following statements are regarding to the early development in nematodes. Which of the following is incorrect?

#Question id: 7178

#Unit 5. Developmental Biology

In sea urchin, the large micromeres are autonomously specified. They inherit maternal determinants that were deposited at the vegetal hemisphere of the egg; these become incorporated into the large micromeres at fourth cleavage. When an isolated animal hemisphere is combined with isolated micromeres, then what will be the result?

#Question id: 7179

#Unit 5. Developmental Biology

Blocking BMP(BMP2, BMP4, BMP7) signaling by infecting progress zone cells with retroviruses carrying dominant negative BMP receptors. Which of the following results are found?

#Question id: 7180

#Unit 5. Developmental Biology

Development of tetrapod limb has to function in a three dimensional coordinated system:

Proximal-distal axis by ____a_____

Anterior-posterior axis by ___b_____

Dorsal-ventral axis by ______c____

Which of the following combinations are correct?

#Question id: 7181

#Unit 5. Developmental Biology

Following graph represents Inhibition of L1-mediated cell adhesion by alcohol.

If L1 is mutate, which of the following graph is correct?