Description

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Context:

Australian scientists have discovered a bigger, more venomous species of the Sydney funnel-web spider, one of the world's deadliest.

About Sydney funnel-web spider

Scientists have named this 9-centimeter-long species Atrax christenseni. The new species of funnel-web has earned the nickname "Big Boy" and was first discovered in the early 2000s near Newcastle, 170 km north of Sydney.

Characteristics

They are shiny, dark brown to black spiders with finger-like spinnerets (silk-spinning organs) at the end of the abdomen. Its venom glands are much larger and its fangs are much longer.
Only the male Sydney funnel-web, which carries a much stronger venom, is responsible for human deaths.
Habitat: Found in scrubby suburban areas, open and closed sclerophyll forests, and woodlands, often on southern or eastern slopes or in shady ravines.

About funnel-web spider

These are some of the most dangerous arachnids in the world.
There are 36 described species of Australian funnel-web spiders and they are currently classified into three genera: Hadronyche, Atrax, and Illawarra.
The spider has venom that is filled with 40 different toxic proteins. Its raw venom is the best way to make a life-saving antidote.

About Arthropods

Characteristic	Description
Body Structure	Segmented body with head, thorax, and abdomen. Paired appendages for feeding, sensory input, defense, and locomotion.
Exoskeleton	A tough chitinous exoskeleton, often mineralized with calcium carbonate, is shed during molting for growth.
Circulatory System	Open system with hemocoel containing blood lymph; multiple hearts pump blood lymph for oxygen distribution.
Digestive System	Complete system with mouth and anus.
Respiratory System	Aquatic species use gills; terrestrial species use tracheal systems, book lungs, or modified structures for gas exchange.
Nervous System	Ladder-like with paired ventral cords and ganglia; fused ganglia in the head form the brain around the esophagus.
Sensory Organs	Compound eyes, pigment spots, cuticular setae for chemical and mechanical sensing.
Reproduction	Internal or external fertilization; most lay eggs, some are viviparous; larval forms vary, with some undergoing metamorphosis.
Examples	Chelicerata: Spiders, scorpions, mites. Crustaceans: Crabs, shrimps, barnacles. Insects: Collembola, Diplura. Myriapoda: Centipedes.

Source:

https://www.indiatoday.in/amp/science/story/meet-big-boy-newly-discovered-spider-species-is-one-of-the-deadliest-in-the-world-2665068-2025-01-15

PRACTICE QUESTION

Consider the following statements regarding the Arthropods:
It possesses an exoskeleton made of chitin that is periodically shed through a process called molting.
The respiratory system in arthropods includes gills, tracheae, or lungs, depending on the species.
Arthropods exhibit bilateral symmetry and a segmented body divided into head, thorax, and abdomen.

How many of the above statements is/are correct?