Practice Questions

TLS Online TPP Program

#Question id: 11122

Phylogenetic hypotheses (such as those represented by phylogenetic trees) are strongest when

#Unit 9. Diversity of Life Forms

they are based on amino acid sequences from homologous proteins, as long as the genes that code for such proteins contain no introns.
each clade is defined by a single derived character.
they are supported by more than one kind of evidence, such as when fossil evidence corroborates molecular evidence.
they are accepted by the foremost authorities in the field, especially if they have won Nobel Prizes.

More Questions

TLS Online TPP Program

#Question id: 5540

#Unit 5. Developmental Biology

A new-born infant attains maternal antibodies from the mother's

TLS Online TPP Program

#Question id: 19096

#Unit 6. System Physiology – Plant

Coronatine is a toxin effector to mimic which of the plant hormone?

TLS Online TPP Program

#Question id: 19079

#Unit 6. System Physiology – Plant

Pathogen evades plant by penetration of surface layers directly using mechanical pressure or enzymatic attack, some pass through natural openings, such as stomata or lenticels, and others only enter through wounded tissue. Once inside the plant, one of three main attack strategies is deployed specific feature of interaction given;

C) Hemibiotrophy

i) where the plant cells remain alive throughout infection

ii) where the plant cells are killed in advance of infection

iii) extensive plant tissue damage at initial stages

iv) where the pathogen initially keeps cells alive but at later stages of the infection, kills them

Match the following

TLS Online TPP Program

#Question id: 1050

#Unit 4. Cell Communication and Cell Signaling

Which does not refer to the shape of a virus?

TLS Online TPP Program

#Question id: 19091

#Unit 4. Cell Communication and Cell Signaling

Fusicoccin stimulates

a) Transient growth in stem

b) Plant hormones

c) Proton extrusion

d) Hyperpolarization of membrane

e) Tumor formation