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TLS Online TPP Program

#Question id: 1301

The cell walls of bacteria, fungi, and plant cells, and the extracellular matrix of animal cells are all external to the plasma membrane. Which of the following characteristics are common to all of these extracellular structures?

#SCPH06 I Botany

  1. They must block water and small molecules to regulate the exchange of matter and energy with their environment.

  2. They must provide a rigid structure that maintains an appropriate ratio of cell surface area to volume.

  3. They are constructed of materials that are synthesized in the cytoplasm and then transported out of the cell for assembly.

  4. They are composed of a mixture of lipids and nucleotides.

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TLS Online TPP Program

#Question id: 5430

#SCPH28 | Zoology

A plant height in Maize is control by 3 pair of polygene .Two varieties of maize averaging 120 and 60 inches in height, respectively, are crossed. The F1 progeny is quite uniform averaging 40 inches in height. What is proportional of F2 progeny that is display phenotype either 120 cm or 60 cm height?
TLS Online TPP Program

#Question id: 5431

#SCPH06 I Botany

Plant having height 6 cm are allowed to cross with plant having height 2 cm , all F1 progeny having height uniform 4 cm were allowed selfing to produced F2 progeny in which 3 plant out of  8 having height  4 cm . what are number of polygene involve in that trait ?
TLS Online TPP Program

#Question id: 5431

#SCPH28 | Zoology

Plant having height 6 cm are allowed to cross with plant having height 2 cm , all F1 progeny having height uniform 4 cm were allowed selfing to produced F2 progeny in which 3 plant out of  8 having height  4 cm . what are number of polygene involve in that trait ?
TLS Online TPP Program

#Question id: 5432

#SCPH06 I Botany

which of the following are not feature of polygenic inheritance ?
TLS Online TPP Program

#Question id: 5432

#SCPH28 | Zoology

which of the following are not feature of polygenic inheritance ?
TLS Online TPP Program

#Question id: 5433

#SCPH06 I Botany

Two varieties of maize averaging 120 and 80 inches in height, respectively, are crossed. The F1 progeny is quite uniform averaging 100 inches in height. If height is control by 3 pair of polygene, what is proportional of averaging phenotype in their F2 progeny?