Structural Organization in Animals and Plants [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Biology]: Questions 56 - 58 of 505
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Question 56
Question MCQ▾
In wood dicotyledons, the arrangement of vessels is either diffuse porous or ring porous or ring porous. Based on these data, which one of the following statements is correct?
Choices
Choice (4) | Response | |
---|---|---|
a. | Although diffuse porous vessels are not specialized as ring porous vessels, they conduct more water at all periods and through new xylem vessels added gradually during development. | |
b. | Diffuse porous vessels carry more water and also faster because of a greater number of small vessels having greater capillary force. | |
c. | Ring porous vessels are specialized and are used for conducting more water for a shorter period only, when tyloses occur early in the vessels. | |
d. | Ring porous vessels conduct more water as they are formed early during development, when the need for water is great. |
Question 57
Question MCQ▾
Meristematic tissues include
Choices
Choice (4) | Response | |
---|---|---|
a. | Mature fruits and leaf tips. | |
b. | Stem and root apices, cork cambium and mature fruits. | |
c. | Stem and root apices, vascular cambium and cork cambium. | |
d. | leaf tips, cork cambium and vascular cambium |
Question 58
Question MCQ▾
A mature sieve tube differs from vessel in
Choices
Choice (4) | Response | |
---|---|---|
a. | Being nearly dead. | |
b. | Lacking cytoplasm. | |
c. | Absence of lignified walls. | |
d. | Lacking a functional nucleus. |