Practice Questions

TLS Online TPP Program

#Question id: 12967

Which of the following is the best explanation for why net primary productivity in terrestrial ecosystems tends to increase toward the tropics?

#Unit 10. Ecological Principles

The higher species diversity in the tropics tends to increase plant growth.
There are lower metabolic costs to plant growth in the tropics.
The availability of water and warm temperatures in the tropics fosters photosynthesis.
The tropics have more predators that minimize herbivory.

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TLS Online TPP Program

#Question id: 15896

#Unit 12. Applied Biology

Somatic embryos are bipolar structures in that they have a radicle and a plumule,

a) Plumular end sometimes oriented toward the centre of callus or cell mass

b) Plumular end always sticks out from the cell mass

c) The radicular end is always oriented toward the centre of callus or cell mass

d) Radicular end is sometimes sticks out from the cell mass

Which of the following is the well defined bipolar structure of somatic embryos

TLS Online TPP Program

#Question id: 15897

#Unit 12. Applied Biology

Primary somatic embryo regenerating from the

TLS Online TPP Program

#Question id: 15898

#Unit 12. Applied Biology

Which of the following is not related to embryo culture?

TLS Online TPP Program

#Question id: 15899

#Unit 12. Applied Biology

Somatic embryos (SEs) regenerate from the tissues of other SEs or the parts of germinating SEs; such SEs are called

TLS Online TPP Program

#Question id: 15900

#Unit 12. Applied Biology

During development of a somatic embryo from a single superficial cell of the explant, the cells of this meristematic mass continue to divide to give rise to the various stages of SEs. Which of the following is considered correct for the development of SEs?

TLS Online TPP Program

#Question id: 15901

#Unit 12. Applied Biology

The following features are included between the shoot buds and somatic embryo;

A) SHOOT BUD i) Originated from the many cells, usually superficial

B) SOMATIC EMBRYO ii) Polarity is defined as bipolar; both shoot and root poles present

iii) Vascular strands connected with those present in callus/explant

iv) Easily separated from the callus/explant

v) There is no vascular connection with callus/explant

Which of the following correctly represents the features of shoot buds and somatic embryo?