Which of the following statements regarding apomixis is INCORRECT?
Seeds are formed without fertilization
It leads to clonal propagation
It maintains hybrid vigor over generations
It is seen in some species of Asteraceae and grasses
Related Questions
A unique characteristic observed in some angiosperm families like Asteraceae and Poaceae is the presence of a specialized inflorescence where the individual flowers are highly reduced and closely packed together, mimicking a single flower. This specialized inflorescence is known as:
Cyathium
Hypanthodium
Pseudanthium
Verticillaster
Which of the following correctly describes the products of microsporogenesis and megasporogenesis in angiosperms?
Microspores and megaspores, respectively
Megaspores and microspores, respectively
Pollen grains and ovules, respectively
Ovules and pollen grains, respectively
The female reproductive part of a flower is called the:
Stamen
Petal
Sepal
Pistil
The emergent layer, canopy, understory, and forest floor are characteristic vertical layers of:
Tropical Rainforests
Grasslands
Tundra
Taiga
Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms
Absence of resin duct and leaf venation
Presence of vessel elements and absence of archegonia
Perianth and two integuments
Embryo development and apical meristem
Which of the following is NOT a characteristic feature of the family Fabaceae?
Legume fruit
Diadelphous stamens
Marginal placentation
Trimerous flowers
Winged Petioles are found in
Citrus
Dhalia
1 and 2
None of these
Embryo sac consists of
One egg cell
Two synergids
Three antipodal and two polar nuclei
All of the above
Which structure in the flower produces pollen?
Stigma
Style
Ovary
Anther
Which of the following combinations of floral characteristics is MOST likely to be associated with wind pollination?
Large, showy flowers; abundant nectar; small amounts of pollen; sticky stigma
Small, inconspicuous flowers; no nectar; large amounts of pollen; feathery stigma
Brightly colored flowers; strong fragrance; moderate amounts of pollen; tubular stigma
Large, bell-shaped flowers; copious nectar; few pollen grains; exposed stigma
