TLS Online TPP Program

#Question id: 19277


which of these statements correctly describes a portion of the pine life cycle? 

#Unit 9. Diversity of Life Forms
  1. Female gametophytes use mitosis to produce eggs
  2. Seeds are produced in pollen-producing cones
  3. Pollen grains contain female gametophytes
  4. A pollen tube slowly digests its way through the triploid endosperm
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TLS Online TPP Program

#Question id: 3490

#Unit 11. Evolution and Behavior

Given below are some behaviors strategies.

A) Fixed action pattern, complex sequence of behavior, Once released and continuous to completion, even when there is change in surrounding environment

B)  natural selection select that territorial behavior that is benefit is greater than cost 

C) Imprinting, a form of learning in which a very young animal fixes its attention on the first object with which it has visual, auditory, or tactile experience

D) Donor benefits at a cost to the recipient, the behavior is altruistic; when the recipient benefits at a cost to the donor, the behavior is selfish.

Which one of the following correct combination of true and false?

TLS Online TPP Program

#Question id: 2544

#Unit 2. Cellular Organization

Asbestos is a material that was once used extensively in construction. One risk from working in a building that contains asbestos is the development of asbestosis caused by the inhalation of asbestos fibers. Cells will take up asbestos by phagocytosis, but are not able to degrade it. As a result, asbestos fibers accumulate in ________.

TLS Online TPP Program

#Question id: 18833

#Unit 13. Methods in Biology

The PCR procedure, where Taq polymerase is added after the rest of the PCR components are heated to the  DNA melting temperature, so as to avoid non-specific amplification at lower temperatures is

TLS Online TPP Program

#Question id: 9186

#Unit 9. Diversity of Life Forms

A pathogenic fungus invades a plant. What does the infected plant produce in response to the attack?

TLS Online TPP Program

#Question id: 1074

#Unit 4. Cell Communication and Cell Signaling

Viroids cause disease in