0-05-02
MCO
Haustoria is developed between
Dermal tissue of plant and epidermal
tissue of host plant.
Ground tissue of plant and epidermal
tissue of host plant.
Conducting tissue of plant and
epidermal tissue of host plant.
Conducting tissue of plant and
conducting tissue of host plant.
Answers
Answer:
Haustorium
Haustoria are variously shaped, being knob-shaped in Albugo candida, large and irregularly swollen in Peronospora parasitica, and branched in Puccinia menthae.
From: Encyclopedia of Food Microbiology (Second Edition), 2014Hemiparasitism
David Smith, ... Claude W. dePamphilis, in Encyclopedia of Biodiversity (Second Edition), 2001
The Haustorium
Haustoria are extremely varied structures among parasitic plants. In root parasites, haustoria are easily identified on exposed roots. They appear as swollen tissue at a contact point between parasite and host. In dodders, haustoria superficially resemble pegs or suction cups that connect the host and parasite. In general, haustorial cells occupy intercellular spaces and displace the host tissue, but enzymes also digest the host cell walls. Once a parasitic plant has encountered a host, it must penetrate the cambium and establish an interface. The interface is extremely varied. In most cases, the parasite forms a continuum with the xylem of the host plant, but in others (e.g., Cuscuta), the parasitic plant taps into the phloem. Host-derived materials may be transferred through strawlike intrusions into the host vascular tissue, or they are simply absorbed across cell walls. Haustorial cells near host tissue are usually rich in mitochondria and rough endoplasmic reticulum suggesting they are probably actively producing proteins that are likely used to produce digestive enzymes. After forming the initial haustorium, parasites may enhance local root
Explanation:
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