Before experimental biology or physiology was established as a part of biology, naturalists described only biology. Consequently, biology remained for a long time as a:
According to the unit introduction, before experimental biology or physiology was established, naturalists described only biology, so biology remained as a natural history for a long time.
Question 2 of 300
📘 CLASS XI
What spreads the curly top virus through a plant, as reported by Katherine Esau in her early publications?
Katherine Esau reported in her early publications that the curly top virus spreads through a plant via the food-conducting or phloem tissue.
Question 3 of 300
📘 CLASS XI
Which book published by Katherine Esau in 1960 was referred to as 'Webster’s of plant biology' due to its encyclopedic nature?
The Anatomy of Seed Plants by Katherine Esau was published in 1960 and was referred to as 'Webster’s of plant biology'.
Question 4 of 300
📘 CLASS XI
In which year did Katherine Esau receive the National Medal of Science from President George Bush?
She received the National Medal of Science from President George Bush in 1989.
Question 5 of 300
📘 CLASS XI
Angiosperms are characterized by the presence of which of the following standard features?
Angiosperms are characterized by the presence of roots, stems, leaves, flowers, and fruits.
Question 6 of 300
📘 CLASS XI
In majority of the dicotyledonous plants, direct elongation of the radicle leads to the formation of the:
In majority of the dicotyledonous plants, the direct elongation of the radicle leads to the formation of primary root which grows inside the soil.
Question 7 of 300
📘 CLASS XI
The primary root and its lateral branches constitute the:
The primary roots and its branches constitute the tap root system.
Question 8 of 300
📘 CLASS XI
The tap root system is typically seen in which of the following plants?
The tap root system is seen in the mustard plant.
Question 9 of 300
📘 CLASS XI
In monocotyledonous plants, how is the primary root characterized?
In monocotyledonous plants, the primary root is short-lived and is replaced by a large number of roots.
Question 10 of 300
📘 CLASS XI
From which region of the monocotyledonous plant do the fibrous roots originate?
In monocotyledonous plants, fibrous roots originate from the base of the stem.
