Practice Questions

TLS Online TPP Program

#Question id: 13125

Which of the following statements is consistent with the principle of competitive exclusion?

#Unit 10. Ecological Principles

Bird species generally do not compete for nesting sites.
The density of one competing species will have a positive impact on the population growth of the other competing species.
Two species with the same fundamental niche will exclude other competing species.
Even a slight reproductive advantage will eventually lead to the elimination of the less well adapted of two competing species

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TLS Online TPP Program

#Question id: 14904

#Unit 6. System Physiology – Plant

Cell walls commonly are classified into two major types. This classification is based not on structural or biochemical differences;

A) primary walls and

B) secondary walls

i) walls formed during cell growth

ii) walls that are formed after cell enlargement stops

iii) multilayered walls that are strengthened and waterproofed by lignin

iv) Usually they are thin and simple, but sometimes may be thick and multilayered, such as those found in collenchyma or in the epidermis

v) highly specialized in structure and composition, reflecting the differentiated state of the cell

Which of the following correctly represents features of primary and secondary walls?

TLS Online TPP Program

#Question id: 14905

#Unit 6. System Physiology – Plant

A thin layer called the middle lamella is found at the interface, middle lamella is typically enriched with acidic polysaccharides_____A______, which may be complexed with_______B__________.

TLS Online TPP Program

#Question id: 14906

#Unit 6. System Physiology – Plant

The specific linkages between sugar rings, including the specific carbons that are linked together and the configuration of the linkage, are important for the properties of the polysaccharide;

I) Amylose a) β(1,3)-linkages

II) Cellulose b) β (1,4)-linkages

III) Callose c) α(1,4)-linked

d) α (1,3)-linkages

Which of the following linkage combinations is correct linkages of the polysaccharides?

TLS Online TPP Program

#Question id: 14922

#Unit 8. Inheritance Biology

Which is an example of a study that might be done by a transmission geneticist?

TLS Online TPP Program

#Question id: 14923

#Unit 8. Inheritance Biology

Which of the following were key reasons for Mendel's success in elucidating his genetic laws?

TLS Online TPP Program

#Question id: 14924

#Unit 8. Inheritance Biology

Which is NOT a characteristic that made peas useful as a model system for Mendel's studies?