TLS Online TPP Program

#Question id: 13207


The polymer-trapping model explains symplastic loading in plants with intermediary-type companion cells, this model makes three prediction; which one of the following prediction is INCORRECT?

#Unit 6. System Physiology – Plant
  1. Sucrose should be more concentrated in the mesophyll than in the intermediary cells
  2. The enzymes for raffinose and stachyose synthesis should be preferentially located in the intermediary cells
  3. The plasmodesmata linking the bundle sheath cells and the intermediary cells should exclude molecules larger than sucrose
  4. Plasmodesmata between the intermediary cells and sieve elements must be smaller donot allow passage of raffinose and stachyose
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TLS Online TPP Program

#Question id: 5046

#Unit 5. Developmental Biology

During early cleavage stages in drosophila, nuclei divide through 13 cycles in the absence of any cytoplasmic cleavage. This division creates an embryo of many nuclei contained within one shared cytoplasm surrounded by one common plasma membrane, this process is called as-

TLS Online TPP Program

#Question id: 5047

#Unit 5. Developmental Biology

The process of commitment can be divided into following two stages-

TLS Online TPP Program

#Question id: 5048

#Unit 5. Developmental Biology

when a cell or tissue is capable of differentiating autonomously even when placed into another region of the embryo or a cluster of differently specified cells in a petri dish. This cell or tissue said to be-

TLS Online TPP Program

#Question id: 5049

#Unit 5. Developmental Biology

The fundamental notion of a stem cell is that it can make more stem cells while also producing cells committed to undergoing differentiation. This process is called as-

TLS Online TPP Program

#Question id: 5050

#Unit 5. Developmental Biology

A stem cell capable of producing all the cell types of a lineage(embryonic and extraembryonic) is said to be-

TLS Online TPP Program

#Question id: 5051

#Unit 5. Developmental Biology

after the 8-cell stage, the mammalian embryo develops an outer layer (which becomes the fetal portion of the placenta), and an inner cell mass that generates all the cells of embryo. The cells of the inner cell mass are thus said to be-