Thorns are modified branches, as in citrus and acacia; spines

are modified leaves

Prickles are derived mainly from the epidermis and thus can be easily snapped off the stem, protect plants from larger herbivores

Trichomes, or hairs, provide a much more effective defense against insect pests

TLS Online TPP Program

#Id: 2212

#Unit 11. Evolution and Behavior

Darwin’s evolutionary theory- Common descent

TLS Online TPP Program

#Id: 4795

#Unit 13. Methods in Biology

Median for ungrouped data:

Median = [(n+1)/2]th observation, if n is odd.

Median = mean of (n/2)th observation and [(n/2)+1]th observation, if n is even.

TLS Online TPP Program

#Id: 6309

#Unit 3. Fundamental Processes

In hydrolytic editing, the polymerase backtracks by one or more nucleotides and cleaves the RNA product, removing the error-containing sequence. 

TLS Online TPP Program

#Id: 7045

#Unit 11. Evolution and Behavior

 Mutationist - Theories were advanced by some geneticists who observed that discretely different new phenotypes can arise by a process of mutation.

TLS Online TPP Program

#Id: 1527

#Unit 2. Cellular Organization

The short (∼20 amino acid) C-terminal tails of both α- and β-tubulin that protrude from the microtubule are enriched in glutamic and aspartic acids, the surface of the microtubule possesses a net negative charge.