Chapter 1 : THE LIVING WORLD Flashcards
is called the Darwin of 20th century (NEET)
Ernst Mayr
Ernst Mayr was born at ______ in Germany/England
Kempten, Germany
Ernst Mayr is known for- (NEET)
Gave the definition of biological species
Mayr was awarded three prizes widely regarded as ________ of biology.
triple crown
The 3 prizes that the Mayr was awarded were -
Balzan Prize, International Prize for Biology.
Crafoord Prize
All living organisms grow. T/F
T
All living organisms grow all life. T/F
F (plant grow all life, but animals grow only to a certain age)
Increase in ________ and _______ are twin characteristics of growth.
Mass and number
Unicellular organisms grow by cell division. T/F
T
In majority of higher animals & plants growth and reproduction are mutually inclusive/exclusive.
exclusive
Increase in body mass is considered as growth. T/F
T
Living organisms grow intrinsically/extrinsically
Intrinsically
Growth is a defining property of a living organism. T/F
F (growth is seen in non-living things like mountains, boulders and sand-mounds)
Dead organism doesn’t grow. T/F
T
Reproduction is a defining property of living organism.
F (as mules, sterile worker bees etc can’t reproduce)
Fungi multiply and spread easily due to -
asexual spore
Budding happens in - (2)
yeast and hydra
In ________ true regeneration is seen. (NEET)
Planaria
Fragmentation is seen in - (3) (NEET)
Fungi filamentous algae, protonema of mosses
Reproduction is synonymous with growth in - (3) (NEET)
bacteria, unicellular algae, amoeba
Ex of organisms which don’t reproduce - (3)
Mules and sterile workers bees, infertile human
couples
Some non-living objects are capable of replicating themselves, hence reproduction is not a defining characteristic of living organisms. T/F
F. no non-living object can replicate itself
- Define Metabolism.
Sum total of all chemical reactions occurring in our body
Some non-living object exhibits metabolism. T/F
F. NCERT line pg no.5